This document provides information about DNA, RNA, mutations, and genetic disorders. It discusses the components and functions of DNA and RNA. It defines mutations as changes in DNA sequence and lists some causes as errors in replication, radiation, and viruses. There are two types of mutations: gene mutations, which change DNA sequences within a gene, and chromosomal mutations, which occur at the chromosome level through breaks, deletions, or rearrangements. Gene mutations can be point mutations like substitutions, insertions, and deletions, or frameshift mutations that alter the reading frame. Chromosomal mutations can cause genetic disorders and affect development. The document discusses several examples like Cri du chat syndrome and Down syndrome.
This presentation will help students to brush up their basic concepts and along with that it will help them to understand what are mutations and what are its causes.
Cell Biology and genetics paper - Mutation a basic touch to b.sc students with examples. DNA, genome, gene level mutation and chromosome level with examples. Touched some of the mutation types.
This presentation will help students to brush up their basic concepts and along with that it will help them to understand what are mutations and what are its causes.
Cell Biology and genetics paper - Mutation a basic touch to b.sc students with examples. DNA, genome, gene level mutation and chromosome level with examples. Touched some of the mutation types.
Describe how the structure of the DNA double helix was discovered. E.pdfarchanadesignfashion
Describe how the structure of the DNA double helix was discovered. Explain how DNA
ultimately controls the functioning of cells (be specific), and how/why mutations in DNA can
disrupt proper functioning. In chapter 2 you learned that the function of DNA and RNA is
\"information storage.\" Using what you\'ve teamed in Chapter 5, describe in detail the specific
functions of DNA and RNA. Explain the process of transcription. Explain the process of
translation. Briefly describe three types of mutations and explain how certain mutations can be
unrecognizable in an organism while others may have disastrous consequences. Summarize
three ways that genetic engineering is being used in agriculture. Explain three concerns
regarding the use of GMO\'s in agriculture How has genetic engineering technology been
directly applied to human health (most agriculture applications are indirect)? Has it been
successful? How are goals used to make medicine?
Solution
1 The function of DNA? depends to a large extent on its structure. The three-dimensional
structure of DNA was first proposed by James Watson and Francis Crick in 1953. It is one of the
most famous scientific discoveries of all time.
James and Francis used evidence shared by others, particularly Rosalind Franklin and Maurice
Wilkins, to determine the shape of DNA. Rosalind worked with Maurice at King\'s College
London. She beamed X-rays through crystals of the DNA molecule and then used photographic
film to record where the scattered X-rays fell. The shadows on the film were then used to work
out where the dense molecules lie in the DNA. This technique is called X-ray diffraction. The
DNA crystals resulted in a cross shape on the X-ray film which is typical of a molecule with a
helix shape. The resulting X-ray was named Photograph 51 and Maurice shared it with James
and Francis.
In 1953 James Watson and Francis Crick published their theory that DNA must be shaped like a
double helix. A double helix resembles a twisted ladder. Each \'upright\' pole of the ladder is
formed from a backbone of alternating sugar and phosphate groups. Each DNA base? (adenine,
cytosine, guanine, thymine) is attached to the backbone and these bases form the rungs. There
are ten \'rungs\' for each complete twist in the DNA helix.
James and Francis suggested that each \'rung\' of the DNA helix was composed of a pair of
bases, joined by hydrogen bonds?. According to Erwin Chargaff’s rules, A would always form
hydrogen bonds with T, and C with G.
2 - It is not the DNA itself that controls cellular functions, it is the proteins that are coded by the
DNA. The nucleotide sequences that make up DNA are a “code” for the cell to make hundreds of
different types of proteins; it is these proteins that function to control and regulate cell growth,
division, communication with other cells and most other cellular functions. This is why DNA is
said to “carry” or “store” information in the form of nucleotide sequences.
The sequences need to be “d.
Covers the flow of information from DNA to Protein synthesis, Transcription, Types of RNA, Genetic code, Protein Synthesis, Cell Function and cell reproduction
Richard's aventures in two entangled wonderlandsRichard Gill
Since the loophole-free Bell experiments of 2020 and the Nobel prizes in physics of 2022, critics of Bell's work have retreated to the fortress of super-determinism. Now, super-determinism is a derogatory word - it just means "determinism". Palmer, Hance and Hossenfelder argue that quantum mechanics and determinism are not incompatible, using a sophisticated mathematical construction based on a subtle thinning of allowed states and measurements in quantum mechanics, such that what is left appears to make Bell's argument fail, without altering the empirical predictions of quantum mechanics. I think however that it is a smoke screen, and the slogan "lost in math" comes to my mind. I will discuss some other recent disproofs of Bell's theorem using the language of causality based on causal graphs. Causal thinking is also central to law and justice. I will mention surprising connections to my work on serial killer nurse cases, in particular the Dutch case of Lucia de Berk and the current UK case of Lucy Letby.
Describe how the structure of the DNA double helix was discovered. E.pdfarchanadesignfashion
Describe how the structure of the DNA double helix was discovered. Explain how DNA
ultimately controls the functioning of cells (be specific), and how/why mutations in DNA can
disrupt proper functioning. In chapter 2 you learned that the function of DNA and RNA is
\"information storage.\" Using what you\'ve teamed in Chapter 5, describe in detail the specific
functions of DNA and RNA. Explain the process of transcription. Explain the process of
translation. Briefly describe three types of mutations and explain how certain mutations can be
unrecognizable in an organism while others may have disastrous consequences. Summarize
three ways that genetic engineering is being used in agriculture. Explain three concerns
regarding the use of GMO\'s in agriculture How has genetic engineering technology been
directly applied to human health (most agriculture applications are indirect)? Has it been
successful? How are goals used to make medicine?
Solution
1 The function of DNA? depends to a large extent on its structure. The three-dimensional
structure of DNA was first proposed by James Watson and Francis Crick in 1953. It is one of the
most famous scientific discoveries of all time.
James and Francis used evidence shared by others, particularly Rosalind Franklin and Maurice
Wilkins, to determine the shape of DNA. Rosalind worked with Maurice at King\'s College
London. She beamed X-rays through crystals of the DNA molecule and then used photographic
film to record where the scattered X-rays fell. The shadows on the film were then used to work
out where the dense molecules lie in the DNA. This technique is called X-ray diffraction. The
DNA crystals resulted in a cross shape on the X-ray film which is typical of a molecule with a
helix shape. The resulting X-ray was named Photograph 51 and Maurice shared it with James
and Francis.
In 1953 James Watson and Francis Crick published their theory that DNA must be shaped like a
double helix. A double helix resembles a twisted ladder. Each \'upright\' pole of the ladder is
formed from a backbone of alternating sugar and phosphate groups. Each DNA base? (adenine,
cytosine, guanine, thymine) is attached to the backbone and these bases form the rungs. There
are ten \'rungs\' for each complete twist in the DNA helix.
James and Francis suggested that each \'rung\' of the DNA helix was composed of a pair of
bases, joined by hydrogen bonds?. According to Erwin Chargaff’s rules, A would always form
hydrogen bonds with T, and C with G.
2 - It is not the DNA itself that controls cellular functions, it is the proteins that are coded by the
DNA. The nucleotide sequences that make up DNA are a “code” for the cell to make hundreds of
different types of proteins; it is these proteins that function to control and regulate cell growth,
division, communication with other cells and most other cellular functions. This is why DNA is
said to “carry” or “store” information in the form of nucleotide sequences.
The sequences need to be “d.
Covers the flow of information from DNA to Protein synthesis, Transcription, Types of RNA, Genetic code, Protein Synthesis, Cell Function and cell reproduction
Richard's aventures in two entangled wonderlandsRichard Gill
Since the loophole-free Bell experiments of 2020 and the Nobel prizes in physics of 2022, critics of Bell's work have retreated to the fortress of super-determinism. Now, super-determinism is a derogatory word - it just means "determinism". Palmer, Hance and Hossenfelder argue that quantum mechanics and determinism are not incompatible, using a sophisticated mathematical construction based on a subtle thinning of allowed states and measurements in quantum mechanics, such that what is left appears to make Bell's argument fail, without altering the empirical predictions of quantum mechanics. I think however that it is a smoke screen, and the slogan "lost in math" comes to my mind. I will discuss some other recent disproofs of Bell's theorem using the language of causality based on causal graphs. Causal thinking is also central to law and justice. I will mention surprising connections to my work on serial killer nurse cases, in particular the Dutch case of Lucia de Berk and the current UK case of Lucy Letby.
This presentation explores a brief idea about the structural and functional attributes of nucleotides, the structure and function of genetic materials along with the impact of UV rays and pH upon them.
Slide 1: Title Slide
Extrachromosomal Inheritance
Slide 2: Introduction to Extrachromosomal Inheritance
Definition: Extrachromosomal inheritance refers to the transmission of genetic material that is not found within the nucleus.
Key Components: Involves genes located in mitochondria, chloroplasts, and plasmids.
Slide 3: Mitochondrial Inheritance
Mitochondria: Organelles responsible for energy production.
Mitochondrial DNA (mtDNA): Circular DNA molecule found in mitochondria.
Inheritance Pattern: Maternally inherited, meaning it is passed from mothers to all their offspring.
Diseases: Examples include Leber’s hereditary optic neuropathy (LHON) and mitochondrial myopathy.
Slide 4: Chloroplast Inheritance
Chloroplasts: Organelles responsible for photosynthesis in plants.
Chloroplast DNA (cpDNA): Circular DNA molecule found in chloroplasts.
Inheritance Pattern: Often maternally inherited in most plants, but can vary in some species.
Examples: Variegation in plants, where leaf color patterns are determined by chloroplast DNA.
Slide 5: Plasmid Inheritance
Plasmids: Small, circular DNA molecules found in bacteria and some eukaryotes.
Features: Can carry antibiotic resistance genes and can be transferred between cells through processes like conjugation.
Significance: Important in biotechnology for gene cloning and genetic engineering.
Slide 6: Mechanisms of Extrachromosomal Inheritance
Non-Mendelian Patterns: Do not follow Mendel’s laws of inheritance.
Cytoplasmic Segregation: During cell division, organelles like mitochondria and chloroplasts are randomly distributed to daughter cells.
Heteroplasmy: Presence of more than one type of organellar genome within a cell, leading to variation in expression.
Slide 7: Examples of Extrachromosomal Inheritance
Four O’clock Plant (Mirabilis jalapa): Shows variegated leaves due to different cpDNA in leaf cells.
Petite Mutants in Yeast: Result from mutations in mitochondrial DNA affecting respiration.
Slide 8: Importance of Extrachromosomal Inheritance
Evolution: Provides insight into the evolution of eukaryotic cells.
Medicine: Understanding mitochondrial inheritance helps in diagnosing and treating mitochondrial diseases.
Agriculture: Chloroplast inheritance can be used in plant breeding and genetic modification.
Slide 9: Recent Research and Advances
Gene Editing: Techniques like CRISPR-Cas9 are being used to edit mitochondrial and chloroplast DNA.
Therapies: Development of mitochondrial replacement therapy (MRT) for preventing mitochondrial diseases.
Slide 10: Conclusion
Summary: Extrachromosomal inheritance involves the transmission of genetic material outside the nucleus and plays a crucial role in genetics, medicine, and biotechnology.
Future Directions: Continued research and technological advancements hold promise for new treatments and applications.
Slide 11: Questions and Discussion
Invite Audience: Open the floor for any questions or further discussion on the topic.
Professional air quality monitoring systems provide immediate, on-site data for analysis, compliance, and decision-making.
Monitor common gases, weather parameters, particulates.
(May 29th, 2024) Advancements in Intravital Microscopy- Insights for Preclini...Scintica Instrumentation
Intravital microscopy (IVM) is a powerful tool utilized to study cellular behavior over time and space in vivo. Much of our understanding of cell biology has been accomplished using various in vitro and ex vivo methods; however, these studies do not necessarily reflect the natural dynamics of biological processes. Unlike traditional cell culture or fixed tissue imaging, IVM allows for the ultra-fast high-resolution imaging of cellular processes over time and space and were studied in its natural environment. Real-time visualization of biological processes in the context of an intact organism helps maintain physiological relevance and provide insights into the progression of disease, response to treatments or developmental processes.
In this webinar we give an overview of advanced applications of the IVM system in preclinical research. IVIM technology is a provider of all-in-one intravital microscopy systems and solutions optimized for in vivo imaging of live animal models at sub-micron resolution. The system’s unique features and user-friendly software enables researchers to probe fast dynamic biological processes such as immune cell tracking, cell-cell interaction as well as vascularization and tumor metastasis with exceptional detail. This webinar will also give an overview of IVM being utilized in drug development, offering a view into the intricate interaction between drugs/nanoparticles and tissues in vivo and allows for the evaluation of therapeutic intervention in a variety of tissues and organs. This interdisciplinary collaboration continues to drive the advancements of novel therapeutic strategies.
Earliest Galaxies in the JADES Origins Field: Luminosity Function and Cosmic ...Sérgio Sacani
We characterize the earliest galaxy population in the JADES Origins Field (JOF), the deepest
imaging field observed with JWST. We make use of the ancillary Hubble optical images (5 filters
spanning 0.4−0.9µm) and novel JWST images with 14 filters spanning 0.8−5µm, including 7 mediumband filters, and reaching total exposure times of up to 46 hours per filter. We combine all our data
at > 2.3µm to construct an ultradeep image, reaching as deep as ≈ 31.4 AB mag in the stack and
30.3-31.0 AB mag (5σ, r = 0.1” circular aperture) in individual filters. We measure photometric
redshifts and use robust selection criteria to identify a sample of eight galaxy candidates at redshifts
z = 11.5 − 15. These objects show compact half-light radii of R1/2 ∼ 50 − 200pc, stellar masses of
M⋆ ∼ 107−108M⊙, and star-formation rates of SFR ∼ 0.1−1 M⊙ yr−1
. Our search finds no candidates
at 15 < z < 20, placing upper limits at these redshifts. We develop a forward modeling approach to
infer the properties of the evolving luminosity function without binning in redshift or luminosity that
marginalizes over the photometric redshift uncertainty of our candidate galaxies and incorporates the
impact of non-detections. We find a z = 12 luminosity function in good agreement with prior results,
and that the luminosity function normalization and UV luminosity density decline by a factor of ∼ 2.5
from z = 12 to z = 14. We discuss the possible implications of our results in the context of theoretical
models for evolution of the dark matter halo mass function.
Cancer cell metabolism: special Reference to Lactate PathwayAADYARAJPANDEY1
Normal Cell Metabolism:
Cellular respiration describes the series of steps that cells use to break down sugar and other chemicals to get the energy we need to function.
Energy is stored in the bonds of glucose and when glucose is broken down, much of that energy is released.
Cell utilize energy in the form of ATP.
The first step of respiration is called glycolysis. In a series of steps, glycolysis breaks glucose into two smaller molecules - a chemical called pyruvate. A small amount of ATP is formed during this process.
Most healthy cells continue the breakdown in a second process, called the Kreb's cycle. The Kreb's cycle allows cells to “burn” the pyruvates made in glycolysis to get more ATP.
The last step in the breakdown of glucose is called oxidative phosphorylation (Ox-Phos).
It takes place in specialized cell structures called mitochondria. This process produces a large amount of ATP. Importantly, cells need oxygen to complete oxidative phosphorylation.
If a cell completes only glycolysis, only 2 molecules of ATP are made per glucose. However, if the cell completes the entire respiration process (glycolysis - Kreb's - oxidative phosphorylation), about 36 molecules of ATP are created, giving it much more energy to use.
IN CANCER CELL:
Unlike healthy cells that "burn" the entire molecule of sugar to capture a large amount of energy as ATP, cancer cells are wasteful.
Cancer cells only partially break down sugar molecules. They overuse the first step of respiration, glycolysis. They frequently do not complete the second step, oxidative phosphorylation.
This results in only 2 molecules of ATP per each glucose molecule instead of the 36 or so ATPs healthy cells gain. As a result, cancer cells need to use a lot more sugar molecules to get enough energy to survive.
Unlike healthy cells that "burn" the entire molecule of sugar to capture a large amount of energy as ATP, cancer cells are wasteful.
Cancer cells only partially break down sugar molecules. They overuse the first step of respiration, glycolysis. They frequently do not complete the second step, oxidative phosphorylation.
This results in only 2 molecules of ATP per each glucose molecule instead of the 36 or so ATPs healthy cells gain. As a result, cancer cells need to use a lot more sugar molecules to get enough energy to survive.
introduction to WARBERG PHENOMENA:
WARBURG EFFECT Usually, cancer cells are highly glycolytic (glucose addiction) and take up more glucose than do normal cells from outside.
Otto Heinrich Warburg (; 8 October 1883 – 1 August 1970) In 1931 was awarded the Nobel Prize in Physiology for his "discovery of the nature and mode of action of the respiratory enzyme.
WARNBURG EFFECT : cancer cells under aerobic (well-oxygenated) conditions to metabolize glucose to lactate (aerobic glycolysis) is known as the Warburg effect. Warburg made the observation that tumor slices consume glucose and secrete lactate at a higher rate than normal tissues.
Comparing Evolved Extractive Text Summary Scores of Bidirectional Encoder Rep...University of Maribor
Slides from:
11th International Conference on Electrical, Electronics and Computer Engineering (IcETRAN), Niš, 3-6 June 2024
Track: Artificial Intelligence
https://www.etran.rs/2024/en/home-english/
Nutraceutical market, scope and growth: Herbal drug technologyLokesh Patil
As consumer awareness of health and wellness rises, the nutraceutical market—which includes goods like functional meals, drinks, and dietary supplements that provide health advantages beyond basic nutrition—is growing significantly. As healthcare expenses rise, the population ages, and people want natural and preventative health solutions more and more, this industry is increasing quickly. Further driving market expansion are product formulation innovations and the use of cutting-edge technology for customized nutrition. With its worldwide reach, the nutraceutical industry is expected to keep growing and provide significant chances for research and investment in a number of categories, including vitamins, minerals, probiotics, and herbal supplements.
3. DNA -Known as deoxyribonucleic acid found in nucleus of the
eukaryotic cell which carries the genetic DNA code. It has 4
nitrogenous bases
Adenine (A)= Thymine (T)
Cytosine (C) = Guanine (G)
RNA -ribonucleic acid which helps assist in making the proteins, it
has 4 nitrogenous base pairs
Adenine (A)= Uracil (U)
Cytosine ( C) = Guanine (G)
and 3 types of RNA..
mRNA – messenger RNA
tRNA – Transfer RNA
rRNA – ribosomal RNA
8. What is mutations?
Mutation is any change in the DNA sequence or
in chromosomes of leaving cells.
What are the cause of mutation?
The cause of mutation may be due to errors in
replication, errors during transcription, radiation,
viruses and many other things.
11. Gene Mutation is a permanent change in the
DNA sequence that makes up a gene.
12.
13. Point Mutation – changes in one or a few
nucleotides. It includes substitution,
deletion, and insertion
Frameshift Mutation -shifts the reading
frame of the genetic message so that the
protein may not be able to perform it’s
function. It also includes insertion and
deletion.
25. What is a functional protein?
In a functional protein there is a change in
the gene but amino acid sequence is still
the same.
In a Nonfunctional protein there is a
change in the gene and in the amino acid
sequence.
31. Chromosomal mutation occurs at the chromosome
level resulting in gene deletion, duplication,
translocation and inversion that may occur during
meiosis. It maybe cause by parts of chromosomes
breaking off or rejoining incorrectly.
34. Objectives:
*Illustrate the kinds of chromosomal mutation
*Differentiate the kinds of chromosomal
mutation
*Demonstrate the process of change in the
original structure of the chromosome using
chromosomal mutation
35. Safety procedure:
1. Clean and arrange your chairs and
space after activity
2. Return all materials to the teacher.
3. Do not write on the activity sheet
4. Return the activity sheet.
36. 1. How do errors in base pairing of the DNA
change the DNA sequence?
2. What do you call these changes?
3. What might cause the mutation to occur?
37. 1. How do errors in base pairing of the DNA
change the DNA sequence?
Different protein that is usually non-
functional or with altered function will be
made.
38. 2. What do you call these changes?
Mutation
3. What might cause the mutation to occur?
39. 1. Different protein that is usually non-
functional or with altered function will be
made.
2. Mutation
3. Mutations may be caused by mutagens in
the form of radiation, chemicals, Extremes
of temperature, and even viral infection.
43. Possible effects of chromosomal mutations
are:
Cri du chat
Down syndrome
Edwards syndrome
Jacobsen syndrome
Klinefelter’s syndrome
Turners syndrome
61. Genetic Engineering – also called
genetic modification is a process
that uses laboratory-based
technologies to alter the DNA
makeup of an organism.
