SlideShare a Scribd company logo
Recombination at the Molecular Level
• three types
– homologous recombination
– site specific recombination
– transposition
Reciprocal Homologous
Recombination:
Double-Strand Break Model
Nonreciprocal Homologous Recombination: Fox Model

• incorporation of single
strand of DNA into
chromosome, forming
heteroduplex DNA
• thought to occur during
bacterial transformation
Site-specific recombination
• important in insertion of viral genomes into
host chromosomes
• there is only a small region of homology
between inserted genetic material & host
chromosome
transposition & transposable elements
transposable elements = transposons =
mobile genetic elements = “jumping genes”
Please note that due to differing
operating systems, some animations
will not appear until the presentation is
viewed in Presentation Mode (Slide
Show view). You may see blank slides
in the “Normal” or “Slide Sorter” views.
All animations will appear after viewing
in Presentation Mode and playing each
animation. Most animations will require
the latest version of the Flash
Player, which is available at
http://get.adobe.com/flashplayer.
Please note that due to differing
operating systems, some animations
will not appear until the presentation is
viewed in Presentation Mode (Slide
Show view). You may see blank slides
in the “Normal” or “Slide Sorter” views.
All animations will appear after viewing
in Presentation Mode and playing each
animation. Most animations will require
the latest version of the Flash
Player, which is available at
http://get.adobe.com/flashplayer.
replicative
transposition
Please note that due to differing
operating systems, some animations
will not appear until the presentation is
viewed in Presentation Mode (Slide
Show view). You may see blank slides
in the “Normal” or “Slide Sorter” views.
All animations will appear after viewing
in Presentation Mode and playing each
animation. Most animations will require
the latest version of the Flash
Player, which is available at
http://get.adobe.com/flashplayer.
R plasmid w/
integrated
Tn3 transposon
What are potential effects of
transposons?
Bacterial Conjugation
• Transfer of genes
between bacteria
that depends on
– direct cell to cell
contact mediated by
a sex pilus
– type IV secretion
system
Evidence for Bacterial Conjugation (Lederberg & Tatum, 1946)
The U-Tube Experiment (Davis, 1950)
Types of Conjugation
1. F+ × F2. Hfr × F3. F’
+

-

F x F Mating
– copy of F factor is transferred to recipient &
does not integrate into the host chromosome
– donor genes usually not transferred
+

-

F xF
Mating
rolling-circle
replication
Please note that due to differing
operating systems, some animations
will not appear until the presentation is
viewed in Presentation Mode (Slide
Show view). You may see blank slides
in the “Normal” or “Slide Sorter” views.
All animations will appear after viewing
in Presentation Mode and playing each
animation. Most animations will require
the latest version of the Flash
Player, which is available at
http://get.adobe.com/flashplayer.
Hfr Conjugation
– donor has F factor integrated into its
chromosome (Hfr cell)
– donor genes are transferred to recipient cell
– complete copy of the F factor is usually not
transferred
Figure 14.24a
Figure 14.24b
F’ Conjugation
• F factor incorrectly leaves host chromosome
• some of the F factor is left behind in host
chromosome
• some host genes have been removed along
w/ some of the F factor
– these genes can be transferred to a second host
cell by conjugation
Figure 14.25
Bacterial Transformation
• uptake of naked DNA by a competent cell
followed by incorporation of the DNA into
the recipient cell’s genome
Transduction
• transfer of bacterial genes by viruses
• viruses (bacteriophages) can carry out the
lytic cycle in which the host cell is
destroyed or the viral DNA can integrate
into the host genome, becoming a latent
prophage
Generalized Transduction
• any part of bacterial genome can be
transferred
• occurs during lytic cycle
• during assembly, fragments of host DNA
mistakenly packaged into phage head
– generalized transducing particle
Generalized transduction

abortive transductants = bacteria w/
nonintegrated transduced DNA
Specialized Transduction
• a.k.a. restricted transduction
• carried out only by lysogenic/temperate
phages
• only specific portion of bacterial genome is
transferred
• occurs when prophage incorrectly excises
Specialized/restricted
transduction
Phage lambda
low-frequency
transducing lysate

insert Figure 13.21

high-frequency
transducing lysate
For Tuesday:
Read Ch 17

For Lab Next Week:
Identify unknowns to Group level
Collect materials needed for Team Projects

More Related Content

What's hot

Recombination in bacteria
Recombination in bacteriaRecombination in bacteria
Recombination in bacteria
Dilip Pandya
 
Horizontal gene transfer in bacteria
Horizontal gene transfer in bacteriaHorizontal gene transfer in bacteria
Horizontal gene transfer in bacteria
vibhakhanna1
 
Genetics of bacteria
Genetics of bacteriaGenetics of bacteria
Genetics of bacteria
srijon ghosh
 
Microbiology
Microbiology Microbiology
Microbiology
Helao Silas
 
Bacterial genetics
Bacterial genetics Bacterial genetics
Bacterial genetics
Hasnat Tariq
 
Describe - Gene Transfer
Describe - Gene TransferDescribe - Gene Transfer
Describe - Gene Transfer
b.stev
 
Gene and genetic mapping by recombination
Gene and genetic  mapping by recombinationGene and genetic  mapping by recombination
Gene and genetic mapping by recombination
arif810
 
Transfer of dna between bacterial cell
Transfer of dna between bacterial cellTransfer of dna between bacterial cell
Transfer of dna between bacterial cell
mah neem mah
 
Microbial genetics microbiology ar
Microbial genetics microbiology arMicrobial genetics microbiology ar
Microbial genetics microbiology ar
Hotaru Imai
 
Genetic Recombinition in Bacteria
Genetic Recombinition in BacteriaGenetic Recombinition in Bacteria
Genetic Recombinition in Bacteria
Asad Afridi
 
Bacterial genetics
Bacterial geneticsBacterial genetics
Bacterial genetics
Rinaldo John
 
bacterial transduction
bacterial transductionbacterial transduction
bacterial transduction
vikas kumar
 
Genetic recombination in bacteria
Genetic recombination in bacteriaGenetic recombination in bacteria
Genetic recombination in bacteria
DhruvGohel5
 
Bacterial transformation
Bacterial transformationBacterial transformation
Bacterial transformation
Muhammed Asharudheen
 
Transformation
TransformationTransformation
Transformation
sridevi244
 
Bacterial and viral chromosomes
Bacterial and viral chromosomesBacterial and viral chromosomes
Bacterial and viral chromosomes
Promila Sheoran
 

What's hot (20)

Recombination in bacteria
Recombination in bacteriaRecombination in bacteria
Recombination in bacteria
 
Horizontal gene transfer in bacteria
Horizontal gene transfer in bacteriaHorizontal gene transfer in bacteria
Horizontal gene transfer in bacteria
 
Genetics of bacteria
Genetics of bacteriaGenetics of bacteria
Genetics of bacteria
 
Genetics appt
Genetics apptGenetics appt
Genetics appt
 
Microbiology
Microbiology Microbiology
Microbiology
 
Transduction
TransductionTransduction
Transduction
 
Bacterial genetics
Bacterial genetics Bacterial genetics
Bacterial genetics
 
Describe - Gene Transfer
Describe - Gene TransferDescribe - Gene Transfer
Describe - Gene Transfer
 
Gene and genetic mapping by recombination
Gene and genetic  mapping by recombinationGene and genetic  mapping by recombination
Gene and genetic mapping by recombination
 
Bacterial conjugation
Bacterial conjugationBacterial conjugation
Bacterial conjugation
 
Transformation in bacteria
Transformation in bacteriaTransformation in bacteria
Transformation in bacteria
 
Transfer of dna between bacterial cell
Transfer of dna between bacterial cellTransfer of dna between bacterial cell
Transfer of dna between bacterial cell
 
Microbial genetics microbiology ar
Microbial genetics microbiology arMicrobial genetics microbiology ar
Microbial genetics microbiology ar
 
Genetic Recombinition in Bacteria
Genetic Recombinition in BacteriaGenetic Recombinition in Bacteria
Genetic Recombinition in Bacteria
 
Bacterial genetics
Bacterial geneticsBacterial genetics
Bacterial genetics
 
bacterial transduction
bacterial transductionbacterial transduction
bacterial transduction
 
Genetic recombination in bacteria
Genetic recombination in bacteriaGenetic recombination in bacteria
Genetic recombination in bacteria
 
Bacterial transformation
Bacterial transformationBacterial transformation
Bacterial transformation
 
Transformation
TransformationTransformation
Transformation
 
Bacterial and viral chromosomes
Bacterial and viral chromosomesBacterial and viral chromosomes
Bacterial and viral chromosomes
 

Viewers also liked

Homologous Recombination (HR)
Homologous Recombination (HR)Homologous Recombination (HR)
Homologous Recombination (HR)
Raghav N.R
 
Site specific recombination
Site specific recombination Site specific recombination
Site specific recombination
Ragavendran Abbai
 
DNA Damage, Repair and Recombination
DNA Damage, Repair and RecombinationDNA Damage, Repair and Recombination
DNA Damage, Repair and Recombination
Manju Chhetri
 
Molecular mechanism of recombination, post meiotic segregation
Molecular mechanism of recombination, post meiotic segregationMolecular mechanism of recombination, post meiotic segregation
Molecular mechanism of recombination, post meiotic segregation
Promila Sheoran
 
homologus recombination
homologus recombinationhomologus recombination
homologus recombination
Deepak Rohilla
 
Genetic recombination mechanism
Genetic recombination mechanismGenetic recombination mechanism
Genetic recombination mechanism
Nepalgunj Medical College and Teaching Hospital
 
Dna recombination mechanisms new
Dna recombination mechanisms newDna recombination mechanisms new
Dna recombination mechanisms new
Sidra Shaffique
 
Genetics ppt
Genetics pptGenetics ppt
Genetics ppt
Deepti Barange
 
Dna assembly 1
Dna assembly 1Dna assembly 1
Dna assembly 1marafawi
 
Recombination
RecombinationRecombination
Recombination
Keerthana Manoharan
 
TRANSPOSABLE ELEMENTS
TRANSPOSABLE   ELEMENTSTRANSPOSABLE   ELEMENTS
TRANSPOSABLE ELEMENTS
seetugulia
 
Taiwan - Genetic Screening and Prenatal Diagnosis of Thalassemias
Taiwan - Genetic Screening and Prenatal Diagnosis of ThalassemiasTaiwan - Genetic Screening and Prenatal Diagnosis of Thalassemias
Taiwan - Genetic Screening and Prenatal Diagnosis of Thalassemias
Thalassaemia International Federation
 
Genetic fine str. analysis & complementation
Genetic fine str. analysis & complementationGenetic fine str. analysis & complementation
Genetic fine str. analysis & complementation
Ajay Kumar Chandra
 
Prenatal Testing, deteksi kelainan bawaan sejak dalam kandungan
Prenatal Testing, deteksi kelainan bawaan sejak dalam kandunganPrenatal Testing, deteksi kelainan bawaan sejak dalam kandungan
Prenatal Testing, deteksi kelainan bawaan sejak dalam kandungan
Hendrik Sutopo
 
Shreya transformation ppt
Shreya transformation pptShreya transformation ppt
Shreya transformation pptShreya Modi
 
Ch4 crossing over
Ch4 crossing overCh4 crossing over
Ch4 crossing over
Pratheep Sandrasaigaran
 
Screening
ScreeningScreening
Screening
Pinky Premmy
 
Fine structureof gene,allelic complementation,and split gene
Fine structureof gene,allelic complementation,and split gene Fine structureof gene,allelic complementation,and split gene
Fine structureof gene,allelic complementation,and split gene
Junagadh Agricultural University, Junagadh (Guj.), India
 

Viewers also liked (20)

Homologous Recombination (HR)
Homologous Recombination (HR)Homologous Recombination (HR)
Homologous Recombination (HR)
 
Site specific recombination
Site specific recombination Site specific recombination
Site specific recombination
 
DNA Damage, Repair and Recombination
DNA Damage, Repair and RecombinationDNA Damage, Repair and Recombination
DNA Damage, Repair and Recombination
 
Molecular mechanism of recombination, post meiotic segregation
Molecular mechanism of recombination, post meiotic segregationMolecular mechanism of recombination, post meiotic segregation
Molecular mechanism of recombination, post meiotic segregation
 
homologus recombination
homologus recombinationhomologus recombination
homologus recombination
 
Genetic recombination mechanism
Genetic recombination mechanismGenetic recombination mechanism
Genetic recombination mechanism
 
Dna recombination mechanisms new
Dna recombination mechanisms newDna recombination mechanisms new
Dna recombination mechanisms new
 
Genetics ppt
Genetics pptGenetics ppt
Genetics ppt
 
Dna assembly 1
Dna assembly 1Dna assembly 1
Dna assembly 1
 
Recombination
RecombinationRecombination
Recombination
 
TRANSPOSABLE ELEMENTS
TRANSPOSABLE   ELEMENTSTRANSPOSABLE   ELEMENTS
TRANSPOSABLE ELEMENTS
 
Taiwan - Genetic Screening and Prenatal Diagnosis of Thalassemias
Taiwan - Genetic Screening and Prenatal Diagnosis of ThalassemiasTaiwan - Genetic Screening and Prenatal Diagnosis of Thalassemias
Taiwan - Genetic Screening and Prenatal Diagnosis of Thalassemias
 
Genetic fine str. analysis & complementation
Genetic fine str. analysis & complementationGenetic fine str. analysis & complementation
Genetic fine str. analysis & complementation
 
Prenatal Testing, deteksi kelainan bawaan sejak dalam kandungan
Prenatal Testing, deteksi kelainan bawaan sejak dalam kandunganPrenatal Testing, deteksi kelainan bawaan sejak dalam kandungan
Prenatal Testing, deteksi kelainan bawaan sejak dalam kandungan
 
Shreya transformation ppt
Shreya transformation pptShreya transformation ppt
Shreya transformation ppt
 
Unit2 cell cycle
Unit2   cell cycleUnit2   cell cycle
Unit2 cell cycle
 
Ch4 crossing over
Ch4 crossing overCh4 crossing over
Ch4 crossing over
 
Screening
ScreeningScreening
Screening
 
Fine structureof gene,allelic complementation,and split gene
Fine structureof gene,allelic complementation,and split gene Fine structureof gene,allelic complementation,and split gene
Fine structureof gene,allelic complementation,and split gene
 
Rflp
RflpRflp
Rflp
 

Similar to Lecture 21

10 Lecture Animation Ppt
10 Lecture Animation Ppt10 Lecture Animation Ppt
10 Lecture Animation Ppt
guest2b59ac0
 
Transfer of genetic information-Bijesh
Transfer of genetic information-BijeshTransfer of genetic information-Bijesh
Transfer of genetic information-Bijesh
Bijesh Kavuthodiyil
 
12 Lecture Animation Ppt
12 Lecture Animation Ppt12 Lecture Animation Ppt
12 Lecture Animation Ppt
guest2b59ac0
 
Conjuagtion types and application
Conjuagtion types and applicationConjuagtion types and application
Conjuagtion types and application
JuhiMishra16
 
Microbial genetics mutation
Microbial genetics mutationMicrobial genetics mutation
Microbial genetics mutationLani Manahan
 
Microbial genetics mutation
Microbial genetics mutationMicrobial genetics mutation
Microbial genetics mutation
Lani Manahan
 
Transduction
TransductionTransduction
Transduction
Krishnaraj Rajendran
 
geneticccccccccccccccc recombination.ppt
geneticccccccccccccccc recombination.pptgeneticccccccccccccccc recombination.ppt
geneticccccccccccccccc recombination.ppt
DiptiPriya6
 
Microbial genetics
Microbial geneticsMicrobial genetics
14 Lecture Animation Ppt
14 Lecture Animation Ppt14 Lecture Animation Ppt
14 Lecture Animation Ppt
guest2b59ac0
 
Ch7BacterialGenetics.ppt
Ch7BacterialGenetics.pptCh7BacterialGenetics.ppt
Ch7BacterialGenetics.ppt
dawitg2
 
Ch No 7 Bacterial Genetics and viral genetics.ppt
Ch No 7 Bacterial Genetics and viral genetics.pptCh No 7 Bacterial Genetics and viral genetics.ppt
Ch No 7 Bacterial Genetics and viral genetics.ppt
Umehabiba502674
 
Conjugation mapping
Conjugation mappingConjugation mapping
Conjugation mapping
zulekhak
 
Bacterial genetics and variation
Bacterial genetics and variation Bacterial genetics and variation
Bacterial genetics and variation
HanosaAli
 
Transduction.pptx
Transduction.pptxTransduction.pptx
Transduction.pptx
MANJUSINGH948460
 
Horizontal gene transfer with gene mapping
Horizontal gene transfer with gene mappingHorizontal gene transfer with gene mapping
Horizontal gene transfer with gene mapping
Salman Khan
 
09 Lecture Animation Ppt
09 Lecture Animation Ppt09 Lecture Animation Ppt
09 Lecture Animation Ppt
guest2b59ac0
 
Mechanism of gene transfer.pptx
Mechanism of gene transfer.pptxMechanism of gene transfer.pptx
Mechanism of gene transfer.pptx
HeloEng
 
Ppt
PptPpt

Similar to Lecture 21 (20)

10 Lecture Animation Ppt
10 Lecture Animation Ppt10 Lecture Animation Ppt
10 Lecture Animation Ppt
 
Transfer of genetic information-Bijesh
Transfer of genetic information-BijeshTransfer of genetic information-Bijesh
Transfer of genetic information-Bijesh
 
12 Lecture Animation Ppt
12 Lecture Animation Ppt12 Lecture Animation Ppt
12 Lecture Animation Ppt
 
Conjuagtion types and application
Conjuagtion types and applicationConjuagtion types and application
Conjuagtion types and application
 
Microbial genetics mutation
Microbial genetics mutationMicrobial genetics mutation
Microbial genetics mutation
 
Microbial genetics mutation
Microbial genetics mutationMicrobial genetics mutation
Microbial genetics mutation
 
Transduction
TransductionTransduction
Transduction
 
geneticccccccccccccccc recombination.ppt
geneticccccccccccccccc recombination.pptgeneticccccccccccccccc recombination.ppt
geneticccccccccccccccc recombination.ppt
 
Microbial genetics
Microbial geneticsMicrobial genetics
Microbial genetics
 
14 Lecture Animation Ppt
14 Lecture Animation Ppt14 Lecture Animation Ppt
14 Lecture Animation Ppt
 
Ch7BacterialGenetics.ppt
Ch7BacterialGenetics.pptCh7BacterialGenetics.ppt
Ch7BacterialGenetics.ppt
 
Ch No 7 Bacterial Genetics and viral genetics.ppt
Ch No 7 Bacterial Genetics and viral genetics.pptCh No 7 Bacterial Genetics and viral genetics.ppt
Ch No 7 Bacterial Genetics and viral genetics.ppt
 
Meosis and mitosis
Meosis and mitosisMeosis and mitosis
Meosis and mitosis
 
Conjugation mapping
Conjugation mappingConjugation mapping
Conjugation mapping
 
Bacterial genetics and variation
Bacterial genetics and variation Bacterial genetics and variation
Bacterial genetics and variation
 
Transduction.pptx
Transduction.pptxTransduction.pptx
Transduction.pptx
 
Horizontal gene transfer with gene mapping
Horizontal gene transfer with gene mappingHorizontal gene transfer with gene mapping
Horizontal gene transfer with gene mapping
 
09 Lecture Animation Ppt
09 Lecture Animation Ppt09 Lecture Animation Ppt
09 Lecture Animation Ppt
 
Mechanism of gene transfer.pptx
Mechanism of gene transfer.pptxMechanism of gene transfer.pptx
Mechanism of gene transfer.pptx
 
Ppt
PptPpt
Ppt
 

Recently uploaded

FIDO Alliance Osaka Seminar: Overview.pdf
FIDO Alliance Osaka Seminar: Overview.pdfFIDO Alliance Osaka Seminar: Overview.pdf
FIDO Alliance Osaka Seminar: Overview.pdf
FIDO Alliance
 
How world-class product teams are winning in the AI era by CEO and Founder, P...
How world-class product teams are winning in the AI era by CEO and Founder, P...How world-class product teams are winning in the AI era by CEO and Founder, P...
How world-class product teams are winning in the AI era by CEO and Founder, P...
Product School
 
Accelerate your Kubernetes clusters with Varnish Caching
Accelerate your Kubernetes clusters with Varnish CachingAccelerate your Kubernetes clusters with Varnish Caching
Accelerate your Kubernetes clusters with Varnish Caching
Thijs Feryn
 
Elevating Tactical DDD Patterns Through Object Calisthenics
Elevating Tactical DDD Patterns Through Object CalisthenicsElevating Tactical DDD Patterns Through Object Calisthenics
Elevating Tactical DDD Patterns Through Object Calisthenics
Dorra BARTAGUIZ
 
Connector Corner: Automate dynamic content and events by pushing a button
Connector Corner: Automate dynamic content and events by pushing a buttonConnector Corner: Automate dynamic content and events by pushing a button
Connector Corner: Automate dynamic content and events by pushing a button
DianaGray10
 
GenAISummit 2024 May 28 Sri Ambati Keynote: AGI Belongs to The Community in O...
GenAISummit 2024 May 28 Sri Ambati Keynote: AGI Belongs to The Community in O...GenAISummit 2024 May 28 Sri Ambati Keynote: AGI Belongs to The Community in O...
GenAISummit 2024 May 28 Sri Ambati Keynote: AGI Belongs to The Community in O...
Sri Ambati
 
Key Trends Shaping the Future of Infrastructure.pdf
Key Trends Shaping the Future of Infrastructure.pdfKey Trends Shaping the Future of Infrastructure.pdf
Key Trends Shaping the Future of Infrastructure.pdf
Cheryl Hung
 
UiPath Test Automation using UiPath Test Suite series, part 4
UiPath Test Automation using UiPath Test Suite series, part 4UiPath Test Automation using UiPath Test Suite series, part 4
UiPath Test Automation using UiPath Test Suite series, part 4
DianaGray10
 
Essentials of Automations: Optimizing FME Workflows with Parameters
Essentials of Automations: Optimizing FME Workflows with ParametersEssentials of Automations: Optimizing FME Workflows with Parameters
Essentials of Automations: Optimizing FME Workflows with Parameters
Safe Software
 
From Siloed Products to Connected Ecosystem: Building a Sustainable and Scala...
From Siloed Products to Connected Ecosystem: Building a Sustainable and Scala...From Siloed Products to Connected Ecosystem: Building a Sustainable and Scala...
From Siloed Products to Connected Ecosystem: Building a Sustainable and Scala...
Product School
 
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...
UiPathCommunity
 
Bits & Pixels using AI for Good.........
Bits & Pixels using AI for Good.........Bits & Pixels using AI for Good.........
Bits & Pixels using AI for Good.........
Alison B. Lowndes
 
Monitoring Java Application Security with JDK Tools and JFR Events
Monitoring Java Application Security with JDK Tools and JFR EventsMonitoring Java Application Security with JDK Tools and JFR Events
Monitoring Java Application Security with JDK Tools and JFR Events
Ana-Maria Mihalceanu
 
Epistemic Interaction - tuning interfaces to provide information for AI support
Epistemic Interaction - tuning interfaces to provide information for AI supportEpistemic Interaction - tuning interfaces to provide information for AI support
Epistemic Interaction - tuning interfaces to provide information for AI support
Alan Dix
 
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdfSmart TV Buyer Insights Survey 2024 by 91mobiles.pdf
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf
91mobiles
 
UiPath Test Automation using UiPath Test Suite series, part 3
UiPath Test Automation using UiPath Test Suite series, part 3UiPath Test Automation using UiPath Test Suite series, part 3
UiPath Test Automation using UiPath Test Suite series, part 3
DianaGray10
 
AI for Every Business: Unlocking Your Product's Universal Potential by VP of ...
AI for Every Business: Unlocking Your Product's Universal Potential by VP of ...AI for Every Business: Unlocking Your Product's Universal Potential by VP of ...
AI for Every Business: Unlocking Your Product's Universal Potential by VP of ...
Product School
 
FIDO Alliance Osaka Seminar: The WebAuthn API and Discoverable Credentials.pdf
FIDO Alliance Osaka Seminar: The WebAuthn API and Discoverable Credentials.pdfFIDO Alliance Osaka Seminar: The WebAuthn API and Discoverable Credentials.pdf
FIDO Alliance Osaka Seminar: The WebAuthn API and Discoverable Credentials.pdf
FIDO Alliance
 
Leading Change strategies and insights for effective change management pdf 1.pdf
Leading Change strategies and insights for effective change management pdf 1.pdfLeading Change strategies and insights for effective change management pdf 1.pdf
Leading Change strategies and insights for effective change management pdf 1.pdf
OnBoard
 
The Art of the Pitch: WordPress Relationships and Sales
The Art of the Pitch: WordPress Relationships and SalesThe Art of the Pitch: WordPress Relationships and Sales
The Art of the Pitch: WordPress Relationships and Sales
Laura Byrne
 

Recently uploaded (20)

FIDO Alliance Osaka Seminar: Overview.pdf
FIDO Alliance Osaka Seminar: Overview.pdfFIDO Alliance Osaka Seminar: Overview.pdf
FIDO Alliance Osaka Seminar: Overview.pdf
 
How world-class product teams are winning in the AI era by CEO and Founder, P...
How world-class product teams are winning in the AI era by CEO and Founder, P...How world-class product teams are winning in the AI era by CEO and Founder, P...
How world-class product teams are winning in the AI era by CEO and Founder, P...
 
Accelerate your Kubernetes clusters with Varnish Caching
Accelerate your Kubernetes clusters with Varnish CachingAccelerate your Kubernetes clusters with Varnish Caching
Accelerate your Kubernetes clusters with Varnish Caching
 
Elevating Tactical DDD Patterns Through Object Calisthenics
Elevating Tactical DDD Patterns Through Object CalisthenicsElevating Tactical DDD Patterns Through Object Calisthenics
Elevating Tactical DDD Patterns Through Object Calisthenics
 
Connector Corner: Automate dynamic content and events by pushing a button
Connector Corner: Automate dynamic content and events by pushing a buttonConnector Corner: Automate dynamic content and events by pushing a button
Connector Corner: Automate dynamic content and events by pushing a button
 
GenAISummit 2024 May 28 Sri Ambati Keynote: AGI Belongs to The Community in O...
GenAISummit 2024 May 28 Sri Ambati Keynote: AGI Belongs to The Community in O...GenAISummit 2024 May 28 Sri Ambati Keynote: AGI Belongs to The Community in O...
GenAISummit 2024 May 28 Sri Ambati Keynote: AGI Belongs to The Community in O...
 
Key Trends Shaping the Future of Infrastructure.pdf
Key Trends Shaping the Future of Infrastructure.pdfKey Trends Shaping the Future of Infrastructure.pdf
Key Trends Shaping the Future of Infrastructure.pdf
 
UiPath Test Automation using UiPath Test Suite series, part 4
UiPath Test Automation using UiPath Test Suite series, part 4UiPath Test Automation using UiPath Test Suite series, part 4
UiPath Test Automation using UiPath Test Suite series, part 4
 
Essentials of Automations: Optimizing FME Workflows with Parameters
Essentials of Automations: Optimizing FME Workflows with ParametersEssentials of Automations: Optimizing FME Workflows with Parameters
Essentials of Automations: Optimizing FME Workflows with Parameters
 
From Siloed Products to Connected Ecosystem: Building a Sustainable and Scala...
From Siloed Products to Connected Ecosystem: Building a Sustainable and Scala...From Siloed Products to Connected Ecosystem: Building a Sustainable and Scala...
From Siloed Products to Connected Ecosystem: Building a Sustainable and Scala...
 
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...
 
Bits & Pixels using AI for Good.........
Bits & Pixels using AI for Good.........Bits & Pixels using AI for Good.........
Bits & Pixels using AI for Good.........
 
Monitoring Java Application Security with JDK Tools and JFR Events
Monitoring Java Application Security with JDK Tools and JFR EventsMonitoring Java Application Security with JDK Tools and JFR Events
Monitoring Java Application Security with JDK Tools and JFR Events
 
Epistemic Interaction - tuning interfaces to provide information for AI support
Epistemic Interaction - tuning interfaces to provide information for AI supportEpistemic Interaction - tuning interfaces to provide information for AI support
Epistemic Interaction - tuning interfaces to provide information for AI support
 
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdfSmart TV Buyer Insights Survey 2024 by 91mobiles.pdf
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf
 
UiPath Test Automation using UiPath Test Suite series, part 3
UiPath Test Automation using UiPath Test Suite series, part 3UiPath Test Automation using UiPath Test Suite series, part 3
UiPath Test Automation using UiPath Test Suite series, part 3
 
AI for Every Business: Unlocking Your Product's Universal Potential by VP of ...
AI for Every Business: Unlocking Your Product's Universal Potential by VP of ...AI for Every Business: Unlocking Your Product's Universal Potential by VP of ...
AI for Every Business: Unlocking Your Product's Universal Potential by VP of ...
 
FIDO Alliance Osaka Seminar: The WebAuthn API and Discoverable Credentials.pdf
FIDO Alliance Osaka Seminar: The WebAuthn API and Discoverable Credentials.pdfFIDO Alliance Osaka Seminar: The WebAuthn API and Discoverable Credentials.pdf
FIDO Alliance Osaka Seminar: The WebAuthn API and Discoverable Credentials.pdf
 
Leading Change strategies and insights for effective change management pdf 1.pdf
Leading Change strategies and insights for effective change management pdf 1.pdfLeading Change strategies and insights for effective change management pdf 1.pdf
Leading Change strategies and insights for effective change management pdf 1.pdf
 
The Art of the Pitch: WordPress Relationships and Sales
The Art of the Pitch: WordPress Relationships and SalesThe Art of the Pitch: WordPress Relationships and Sales
The Art of the Pitch: WordPress Relationships and Sales
 

Lecture 21

  • 1. Recombination at the Molecular Level • three types – homologous recombination – site specific recombination – transposition
  • 3. Nonreciprocal Homologous Recombination: Fox Model • incorporation of single strand of DNA into chromosome, forming heteroduplex DNA • thought to occur during bacterial transformation
  • 4. Site-specific recombination • important in insertion of viral genomes into host chromosomes • there is only a small region of homology between inserted genetic material & host chromosome
  • 5. transposition & transposable elements transposable elements = transposons = mobile genetic elements = “jumping genes”
  • 6. Please note that due to differing operating systems, some animations will not appear until the presentation is viewed in Presentation Mode (Slide Show view). You may see blank slides in the “Normal” or “Slide Sorter” views. All animations will appear after viewing in Presentation Mode and playing each animation. Most animations will require the latest version of the Flash Player, which is available at http://get.adobe.com/flashplayer.
  • 7.
  • 8.
  • 9. Please note that due to differing operating systems, some animations will not appear until the presentation is viewed in Presentation Mode (Slide Show view). You may see blank slides in the “Normal” or “Slide Sorter” views. All animations will appear after viewing in Presentation Mode and playing each animation. Most animations will require the latest version of the Flash Player, which is available at http://get.adobe.com/flashplayer.
  • 10.
  • 12. Please note that due to differing operating systems, some animations will not appear until the presentation is viewed in Presentation Mode (Slide Show view). You may see blank slides in the “Normal” or “Slide Sorter” views. All animations will appear after viewing in Presentation Mode and playing each animation. Most animations will require the latest version of the Flash Player, which is available at http://get.adobe.com/flashplayer.
  • 14. What are potential effects of transposons?
  • 15.
  • 16. Bacterial Conjugation • Transfer of genes between bacteria that depends on – direct cell to cell contact mediated by a sex pilus – type IV secretion system
  • 17. Evidence for Bacterial Conjugation (Lederberg & Tatum, 1946)
  • 18. The U-Tube Experiment (Davis, 1950)
  • 19. Types of Conjugation 1. F+ × F2. Hfr × F3. F’
  • 20. + - F x F Mating – copy of F factor is transferred to recipient & does not integrate into the host chromosome – donor genes usually not transferred
  • 23. Please note that due to differing operating systems, some animations will not appear until the presentation is viewed in Presentation Mode (Slide Show view). You may see blank slides in the “Normal” or “Slide Sorter” views. All animations will appear after viewing in Presentation Mode and playing each animation. Most animations will require the latest version of the Flash Player, which is available at http://get.adobe.com/flashplayer.
  • 24. Hfr Conjugation – donor has F factor integrated into its chromosome (Hfr cell) – donor genes are transferred to recipient cell – complete copy of the F factor is usually not transferred
  • 25.
  • 28. F’ Conjugation • F factor incorrectly leaves host chromosome • some of the F factor is left behind in host chromosome • some host genes have been removed along w/ some of the F factor – these genes can be transferred to a second host cell by conjugation
  • 30. Bacterial Transformation • uptake of naked DNA by a competent cell followed by incorporation of the DNA into the recipient cell’s genome
  • 31.
  • 32.
  • 33.
  • 34. Transduction • transfer of bacterial genes by viruses • viruses (bacteriophages) can carry out the lytic cycle in which the host cell is destroyed or the viral DNA can integrate into the host genome, becoming a latent prophage
  • 35.
  • 36. Generalized Transduction • any part of bacterial genome can be transferred • occurs during lytic cycle • during assembly, fragments of host DNA mistakenly packaged into phage head – generalized transducing particle
  • 37. Generalized transduction abortive transductants = bacteria w/ nonintegrated transduced DNA
  • 38. Specialized Transduction • a.k.a. restricted transduction • carried out only by lysogenic/temperate phages • only specific portion of bacterial genome is transferred • occurs when prophage incorrectly excises
  • 40.
  • 41. Phage lambda low-frequency transducing lysate insert Figure 13.21 high-frequency transducing lysate
  • 42. For Tuesday: Read Ch 17 For Lab Next Week: Identify unknowns to Group level Collect materials needed for Team Projects