1. Phylogenetic trees illustrate the evolutionary relationships and degree of relatedness between organisms. They are based on Darwin's idea that all life shares a common ancestor.
2. Characteristics used to construct phylogenetic trees include morphological similarities, fossil evidence, developmental patterns, and molecular sequences. Comparisons are made to determine shared derived characteristics versus analogous structures.
3. Phylogenetic trees are constantly revised as new evidence emerges from fossils, genetics and other data. Earlier trees may look quite different than current understanding.
Evolutionary tree or physlogenetic tree and it's types like rooted and unrooted labeled or unlabelled. How to construct physlogenetic tree and limitations of physlogenetic tree.
Gene mapping | Genetic map | Physical Map | DNA Data Analysis (upgraded)NARC, Islamabad
Genes are useful markers but not ideal.
Mapped feature that are not genes are called DNA markers.
DNA markers must have at least two alleles to be useful.
DNA sequence features that satisfy this requirement are-
– Restriction Fragment Length Polymorphism (RFLP)
Southern hybridization
PCR
– Simple Sequence Length Polymorphism (SSLP)
– Single Nucleotide Polymorphism (SNP)
Mapping- determining the location of elements with in a genome, with respect to identifiable land marks.
Gene mapping describes the methods used to identify the locus of a gene and the distances between genes.
In simple mapping of genes to specific locations on chromosomes.
Two types
Genetic map
Physical Map
They are useful in predicting results of dihybrid and trihybrid crosses.
It allows geneticists to understand the overall complexity and genetic organization of a particular species.
Identify genes responsible for diseases.
Identify genes responsible for traits.
genetic maps are useful from an evolutionary point of view.
A phylogenetic tree is a diagram that represents evolutionary relationships among organisms based on the similarities and differences in their genetic and evolutionary characteristics
The pattern of branching in a phylogenetic tree reflects how species or other groups evolved from a series of common ancestors.
The phylogenetic tree is also called the “Tree of Life” or “Dendrogram”
Evolutionary tree or physlogenetic tree and it's types like rooted and unrooted labeled or unlabelled. How to construct physlogenetic tree and limitations of physlogenetic tree.
Gene mapping | Genetic map | Physical Map | DNA Data Analysis (upgraded)NARC, Islamabad
Genes are useful markers but not ideal.
Mapped feature that are not genes are called DNA markers.
DNA markers must have at least two alleles to be useful.
DNA sequence features that satisfy this requirement are-
– Restriction Fragment Length Polymorphism (RFLP)
Southern hybridization
PCR
– Simple Sequence Length Polymorphism (SSLP)
– Single Nucleotide Polymorphism (SNP)
Mapping- determining the location of elements with in a genome, with respect to identifiable land marks.
Gene mapping describes the methods used to identify the locus of a gene and the distances between genes.
In simple mapping of genes to specific locations on chromosomes.
Two types
Genetic map
Physical Map
They are useful in predicting results of dihybrid and trihybrid crosses.
It allows geneticists to understand the overall complexity and genetic organization of a particular species.
Identify genes responsible for diseases.
Identify genes responsible for traits.
genetic maps are useful from an evolutionary point of view.
A phylogenetic tree is a diagram that represents evolutionary relationships among organisms based on the similarities and differences in their genetic and evolutionary characteristics
The pattern of branching in a phylogenetic tree reflects how species or other groups evolved from a series of common ancestors.
The phylogenetic tree is also called the “Tree of Life” or “Dendrogram”
its deals with the general basic ideas of gene and evolutions.different types of examples are used to explain the gene and evolutions.the origin of basic genetics and their ideas are also formulated in this presentation
lecture for doctorate students while I was working as researcher assisstance about phylogenetic science, definition,
Understand the most basic concepts of phylogeny
Understand the difference between orthology, paralogy and xenology.
Be able to compute simple phylogenetic trees
Understand what bootstrapping means in phylogeny
DNA supercoiling refers to the over- or under-winding of a DNA strand, and is an expression of the strain on that strand.Certain enzymes such as topoisomerases are able to change DNA topology to facilitate functions such as DNA replication or transcription
Chromosomes are thread-like structures located inside the nucleus of animal and plant cells. Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA). Passed from parents to offspring, DNA contains the specific instructions that make each type of living creature unique. The term chromosome comes from the Greek words for color (chroma) and body (soma). In the present slide, the structural chromosomal aberration is discussed. The diseases caused due to such aberrations are also explained. Hope you all enjoy. Feel free to comment if have any further clarifications.
its deals with the general basic ideas of gene and evolutions.different types of examples are used to explain the gene and evolutions.the origin of basic genetics and their ideas are also formulated in this presentation
lecture for doctorate students while I was working as researcher assisstance about phylogenetic science, definition,
Understand the most basic concepts of phylogeny
Understand the difference between orthology, paralogy and xenology.
Be able to compute simple phylogenetic trees
Understand what bootstrapping means in phylogeny
DNA supercoiling refers to the over- or under-winding of a DNA strand, and is an expression of the strain on that strand.Certain enzymes such as topoisomerases are able to change DNA topology to facilitate functions such as DNA replication or transcription
Chromosomes are thread-like structures located inside the nucleus of animal and plant cells. Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA). Passed from parents to offspring, DNA contains the specific instructions that make each type of living creature unique. The term chromosome comes from the Greek words for color (chroma) and body (soma). In the present slide, the structural chromosomal aberration is discussed. The diseases caused due to such aberrations are also explained. Hope you all enjoy. Feel free to comment if have any further clarifications.
Lab 12 Building Phylogenies Objectives .docxDIPESH30
Lab 12
Building Phylogenies
Objectives
In this laboratory exercise, you will examine six species of agaricomycetes and predict the evolutionary
relationships among them. After completing this exercise you will be able to
• define ancestral characteristics, derived characteristics, branch point, and phylogeny.
• predict ancestral and derived characteristics for agaricomycetes.
• construct a phylogeny (phylogenetic tree).
• support the phylogeny with data.
• explain how evolutionary biologists discover evolutionary relationships.
Introduction
One of the most compelling pieces of evidence for evolution is that organisms have amazing similarities. An
example that almost everyone has heard before is that the limbs of birds, bats, horses, moles, cats, frogs,
humans, turtles, and other vertebrates have virtually the same skeletal plan. Furthermore, even snakes and
whales show structural remnants of the limbs of their ancestors. The evolutionary interpretation of these
similarities is that the vertebrate limb has been modified by natural selection to perform different functions
(for example, running, digging, flying). Another commonly used example is that the embryos of turtles,
mice, humans, chickens, and many other vertebrates are amazingly similar. Furthermore, the proteins and
DNA of organisms are remarkably similar. Why, do you suppose, can human diabetics use insulin extracted
from pigs to control their blood sugar levels? Well, the reason is that the chemical structure of human and
pig insulin is very similar.
In addition to these similarities, we discover that organisms that appear similar in one respect are often
similar in other respects (we can say the patterns are “concordant”). For example, organisms that are
similar morphologically (in shape) have similar protein structures. Organisms that are less similar
morphologically have less similar protein structures. This pattern holds for traits that are not easily
modified by evolution, but not so often by traits that are easily modified by selection. For example, flower
color might not be a good trait to use when looking for concordance because it is easily changed
genetically.
The concordance of traits is an important support of evolution. Imagine that we saw that organisms similar
in one set of characteristics were very different in a second set of characteristics and different again in a
third set of characteristics. This situation would be chaotic and we would be forced to question the reality
1
of evolution. The development of methods of DNA and protein analysis has shown dramatically that
organisms that are similar morphologically are also similar at the genetic level.
So, similarity among organisms provides evidence for evolution. We can then turn around and use the
similarities to try to reconstruct evolutionary relationships. That is the purpose of today’s lab: to construct a
hypothes ...
Exam 2 Study Guide. All questions will be over these concepts, voc.docxSANSKAR20
Exam 2 Study Guide. All questions will be over these concepts, vocabulary, and facts
Chp 10:
Cell Cycle
Genome
Mitosis
Chp11:
Meiosis
Gamete
Haploid & Diploid cell
Sexual reproduction
Chp12:
Gregor Mendel
Traits
Genotype & Phenotype
Allele
Dominant Trait & Recessive trait
Homozygous & Heterozygous
Punnet Square (concept. You will not do one on the exam)
Predictable Genetic frequencies (pedigree, farming genetic disorders)
Wild Type
Law of Segregation
Law of Independent assortment
Chp14:
DNA
Backbone
Nucleic Acid
Nucleotides
Base
Base Pair
Codon
Gene
Chromosome
DNA Polymerase (concept, vocab word)
Helicase (concept, vocab word)
Okazaki Fragment (concept, vocab word)
Proof Reading
Telomeres
DNA bases (4) and which bind
RNA: Uracil
Steps of DNA Replication (just listing the steps: min 5 max 10, depending on word choice)
Chp 15:
The Central Dogma of Biology
Transcription (steps, concepts)
Translation (steps, concepts)
tRNA
Mutation
Biotechnology
Chp 18:
Evolution
Natural Selection
Charles Darwin & Alfred R. Wallace
“Survival of the fittest” is incorrect.
Adaptation
Species
Hybrid (species): Postzygotic & Prezygotic
Speciation
Allopatric Speciation
Sympatric Speciation
Adaptive Radiation
Gradual Speciation & Punctuated Equilibrium
Chp 19:
Evolution
Evolution cumulative functions of: (know each)
Mutation, Genetic Drift, Migration, Natural Selection
Chance (involved with Evolution): Fixation, Founder Effect, Population Bottleneck
Natural Selection: 3 conditions for occurrence; what it looks like; what it does/does not do
Convergent Evolution
Evolution’s influence over, but not its “purpose”
Species are the basic unit of Biodiversity
Chp 20:
Phylogeny
Phylogenetic Trees/models
Concept of “shared ancestry”
Taxonomy: concept, define, & list 8 hierarchical categories
Convergent Evolution
Molecular Systematics & DNA Homology
Compare Phylogeny verse the “species concept”
Chp 21-29:
Biodiversity
Flora, Fauna, Biota
Virus (concept, importance to Evolution by Natural Selection)
Importance of “Domain”
Prokaryotes: Define, importance/role in Nature
Stromatolites as evidence
Biofilms
Protists: define, importance/role in Nature
Fungi: Define, importance/role in Nature
3 descriptors of Fungi
Fungal DNA
Hyphae & Mycelium
Decomposer
Mycorrhizae
Plants:
Ancestry (phylogeny)
Plants: Define, importance/role in nature
3 defining descriptors of Plants
Specific adaptations for evolution to land
3 problems all plants (as a phylogenetic group) face
Non-vascular Plant
Vascular Plant
Vascular Seed Plant
Vascular Tissue: Xylem & Phloem
Roots, True leaves
Waxy Cuticle
Important role of Ecological Succession of Plants to Life
Seed Plants:
Seed: define, role/importance of to a plant, water & reproduction
Spermatophytes
Gymnosperm
Angiosperm,
Flower & Fruit
Flower: Stamen, Carpel, Petal, Ovary)
Herbivory
Pollination & Pollinators: Trickery, Bribery, coevolution of
Importance of Plants to Humans
Humans and Plants coevolution
The life of a bee is very different f ...
Phylogeny
1
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http://biology-forums.com/gallery/33_14_08_11_11_21_00_15201243.jpeg
Outline:
Introduction to Phylogeny
Lab Explanation
Lab Time!!
2
You’re going to look at the changes in organisms through time, in the image here the Top of the tree is today
http://elephant.elehost.com/About_Elephants/Stories/Evolution/ancestry.gif
Phylogeny:
The evolutionary development and diversification of a species, or group of organisms, or of a particular feature (characteristic) of an organism
All organisms can be classified
3
Phylogeny is the evolutionary development and diversification of a species
This allows us to classify and identify all organisms
All organisms are connected by the passage of genes along the branches of the phylogenetic Tree of Life
http://tolweb.org/tree/learn/concepts/ConceptsImg/LeavesAndAncestors.jpg
Classification:
Classification of organisms = Taxonomy
There are three main Domains:
Bacteria
Archaea
Eukaryotes
Which two are the
most similar?
4
The classification of organisms is called taxonomy
It is based on distinguishing characteristics
There are 3 Domains, Bacteria, Archaea, and Eukaryotes, which we belong to.
Which two seem to be the most similar?
Carl Linnaeus:
Developed modern taxonomical system
Hierarchical system of classification
General
Specific
Do
KEEP
POND
CLEAN
OR
FROGGY
GETS
SICK
5
So who came up with all of this?
Carl Linnaeus, developed the hierarchical system of classification
It goes: Domain, Kingdom, Phylum, Subphylum, Class, Order, Family, Genus, Species
It starts with the most commonly shared characteristics to species specific characteristics
And can be remembered by the following rhymes, my favorite is
Keep Pond Clean Or Froggy Gets Sick
http://www.icr.org/i/articles/af/linnaeus_found_wide.jpg
http://savannahthecell.weebly.com/uploads/1/3/4/0/13403173/443151711.jpg
6
Now coming back to the three Dominans, which two are most closely related based on their genetics?
Here you can see looking at the tree of life, based on their genetics, the Archaea are more closely related to the Eukaryotes.
Taxonomy of Art:
Kingdom
Phylum
Class
Order
Family
Genus
species
But you’re not going to look at genetics in class today, instead you will be looking at physical characteristics to classify different organisms and then specifically with fish.
I’m going to start off with something that will hopefully be more relatable to you, looking at the a classification of music.
So we start in the Domain of Art, within art there are three kingdoms…
7
Phylogenetic Tree:
Taxonomic classifications reflect phylogeny
Phylogeny Evolutionary History of Organism
Species with similar characteristics have a common ancestor
Greater resemblance, more recent divergence
8
This classification system reflects the evolutionary history of an organism, which is phylogeny.
Taxonomy and Phylogeny are very closely related.
Each species can be traced bac ...
• The method of classifying organisms into monophyletic group of a common ancestor based on shared apomorphic characters is called cladistics.
• Cladistics is now the most commonly used and accepted method for creating phylogenetic system of classifications.
Cladistics produces a hypothesis about the relationship of organisms to predict the morphological characteristics of organism.
Introduction to AI for Nonprofits with Tapp NetworkTechSoup
Dive into the world of AI! Experts Jon Hill and Tareq Monaur will guide you through AI's role in enhancing nonprofit websites and basic marketing strategies, making it easy to understand and apply.
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...Dr. Vinod Kumar Kanvaria
Exploiting Artificial Intelligence for Empowering Researchers and Faculty,
International FDP on Fundamentals of Research in Social Sciences
at Integral University, Lucknow, 06.06.2024
By Dr. Vinod Kumar Kanvaria
Embracing GenAI - A Strategic ImperativePeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Acetabularia Information For Class 9 .docxvaibhavrinwa19
Acetabularia acetabulum is a single-celled green alga that in its vegetative state is morphologically differentiated into a basal rhizoid and an axially elongated stalk, which bears whorls of branching hairs. The single diploid nucleus resides in the rhizoid.
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How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
Biological screening of herbal drugs: Introduction and Need for
Phyto-Pharmacological Screening, New Strategies for evaluating
Natural Products, In vitro evaluation techniques for Antioxidants, Antimicrobial and Anticancer drugs. In vivo evaluation techniques
for Anti-inflammatory, Antiulcer, Anticancer, Wound healing, Antidiabetic, Hepatoprotective, Cardio protective, Diuretics and
Antifertility, Toxicity studies as per OECD guidelines
Overview on Edible Vaccine: Pros & Cons with Mechanism
2.3 Phylogenetic Trees
1. 2.3 Phylogenetic Trees –Illustrating Relatedness
Learning Outcomes:
5. Interpret a phylogenetic tree to identify the degree of relatedness.
6. Explain why the tree of life is constantly revised.1
Reminders: Next reading Quiz for Week 3 due Monday Sept 21st ( see syllabus for pages)
Complete Attitudes about Biology Survey due Monday Sept 21st
Complete Welcome Survey by Wednesday Sept 23rd
Optional Field Trips Sat Sept 19th and Sunday Sept 20th from noon-2pm 16th Ave and Sasamat
Digital Collection and Classification Due Wednesday Sept 23rd
Phylogenetic trees:
-used to describe relatedness between organisms from an evolutionary standpoint
Darwin’s tree of life from Origin of the Species FYI: This is
the only figure in his whole book.
His idea was that all living things have diverged from a shared
common ancestor. All phylogenetic trees are based on this
idea.
Characteristics for comparison and group are chosen for their evolutionary significance.
1. Morphological similarities
-Need to be cautious of analogous structures (with similar function but from different origins) eg fins
Walleye (Sander vitreus) Killer whale (Orcinus orca) Waterboatman (Corixa punctata)
-Need to choose homologous structures (which have a common ancestral origin, but may have
different functions) eg Fig 9.12
Fossil evidence is used to fill in missing early steps in phylogenetic trees
2. Although all our previous
ancestors are not all known, a
large number of fossils have
been found which have
allowed us to create a
phylogenetic tree for humans.
Although we are part of a
large multi-branched tree,
Homo sapiens is the only
member of the tree which is
not extinct.
Note that the chimpanzee is
what is known as an
“outgroup” –a species which
is quite distantly related in
comparison to all the others.
2. Developmental similarities
In the earliest stages of
development distantly related
organisms look quite similar and as
development proceeds differences
emerge..the sooner within embryo
development which the differences
are seen, the more distantly related
the organisms.
Charles Darwin proposed that study of the early development of embryos would allow identification of
evolutionary relationships between organisms. This has proven to be true. This illustration was drawn by one
of his early supporters, the famous naturalist Ernst Haeckel (1874). A figure of real vertebrate embryos is
shown in Fig 9.111 (p234).
3. Molecular similarities
3. Our genetic material is composed of DNA (deoxyribonucleic acid). DNA is composed of four types of molecules
called nucleotides. The sequence of these nucleotides stores all the information for making an organism. The
information in one individual gene is used to make a specific protein. Proteins are composed of amino acids.
Each protein has a specific chemical function and this in term determines some characteristic of an organism.
We can compare specific nucleotide sequences of a gene or the amino acid sequences of a protein between
different organisms.
DNA RNA protein cellular processes specific characteristics
QUESTIONS: What if you find another
organism which had an A and T in the
first two highlighted spots but a T and G
in the latter two highlighted spots? How
would you resolve the evolutionary
relationships? This third organism has 2
ATTGCAACTGGTATCGTGGTTCGAC differences also, but now which one
would you say the “distant relative”
evolved from? What would you do to
resolve this?
Mutations (substitutions, deletions, insertions) in nucleotides can result in new forms of a characteristic. The
greater the number of changes between the sequences of two organisms the greater the time since these
organisms diverged into separate lineages. The fewer sequence differences between two organisms the more
recently these organisms diverged.
Today classifications of organisms largely depend on molecular information
Phylogenetic tree of Life
QUESTION: When you consider how vastly these organisms differ in appearance and habitat, what genes do
they all share which could be compared? What do they all have in common (hint: think at the cellular level)?
4. QUESTIONS: The phylogenetic tree of life shown on the previous page is vastly different from one drawn 50
years ago. Why? Do you expect the tree to look the same 50 years from now? Why or why not?
Characteristics of a phylogenetic tree
1. Indicates our current understanding of
the evolutionary history of species
2. The common ancestor is at the base
of the tree.
3. Branches indicate a divergence in a
characteristic.
4. The farther up the branch occurs, the
more recent the divergence.
Parsimony (Occam’s razor) the simplest
explanation is best for the available
evidence.
QUESTION: No “outgroup” is shown in the above tree. What is a possible much more distantly related
carnivore that could be used as an outgroup for comparison to all others in the tree above?
QUESTION: Which species is more closely related to the Giant panda, the polar bear or the lesser panda?
5. Although not shown in the bear tree
above, it is helpful when drawing your own
tree to indicate shared characteristics
below each branch point as in the
mammalian tree shown at right.
5. YOUR TURN: Use the cards provided to develop a phylogenetic tree of the flowering plants. To sketch out
your tree you should indicate the shared characteristics below the branch points as in the example above.
Decide on the most general characteristics first (at the lowest branchpoints).
Making a phylogenetic tree of local organisms
Without DNA sequences you must rely on morphological characteristics and assume they are homologous
(derived from a common ancestral form). Your phylogenetic tree may be incorrect from an evolutionary
standpoint, but you should strive to represent how similar and dissimilar two species are from one another. In
many ways a phylogenetic tree resembles a dichotomous key (with the first decisions at the base). Again, you
will find it helpful to indicate the shared characteristics below each branchpoint or the diverging characteristics
just after each branchpoint. This will help indicate your logic.