Questions tagged [genetics]
Genetics is the branch of biology that deals with the transmission and variation of inherited characteristics.
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How can I calculate Fst, Gst, and Nei diversity index?
I got different polymorphisms of Cucumber mosaic virus in different regions of its genome from different libraries of RNAseq.
This virus have two coding regions which are 3A and CP regions.
I have ...
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Is it possible to change the DNA of all the cells of an adult human [closed]
The process of making and transferring changes is pretty straightforward relatively speaking in an embroyo. You change the DNA of one cell and all the cells now inherit this change.
But let's say ...
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Meaning of letter “c” in description of mutation: “Homozygous c.195C>G; (p.Cys65Trp)”
In a table in a paper titled Cerebral folate deficiency: Analytical tests and differential diagnosis, there's the following description of a mutation in a patient:
Homozygous c.195C>G; (p.Cys65Trp)...
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1answer
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If some humans inherited 3% of Neanderthal DNA, why are we 99.9% same genome? [duplicate]
Many sources say that humans are 99.5 to 99.9 percent the same.
Also some sources state that some humans have 3.4% Neanderthal DNA and some don't share those genes.
Why is that?
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Why can't a genetically sound human stay alive for an indefinite amount of time given all the ideal conditions? [duplicate]
I have read that even if we can control our food and lifestyle and keep things as ideal as possible, there are other factors beyond our control like effects from neutrinos passing through our body ...
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Are all fusion genes somatic in origin or can fusion genes be germline?
Fusion genes should have an origin.These are essentially hybrid genes that are translocated in its entirety. Eg. BCR-ABL, EML4-ALK are known to be implicated in cancer pathogenesis. Do these ...
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1answer
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Do human genes get affected by irregular sleep and other factors
I'm new here so please go easy on me.
Do our genes-the ones that carry our appearance, intelligence and other traits get destroyed or lost due to irregular sleep, excessive body heat, smoking, ...
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How are haplotype blocks different from genes?
According to Cardon et al. 2003, a haplotype block is
A discrete chromosome region of high linkage disequilibrium and low
haplotype diversity. It is expected that all pairs of polymorphisms
...
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Is it possible to Clone a Dinosaur with a full strand of their DNA? [duplicate]
If you have a full strand of Dinosaur DNA would it be possible to make it living and hatch a dinosaur? Or would it be a failure? Could you use a bird or alligator, for replacein
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How do crossbreeding with Neanderthals affect the genetic difference between ethnic groups?
I do not know exactly how much Neanderhtal/Denisova DNA non-subsaharan peoples carry around today, but I have heard figures of less than two percent in Europe, up to three percent in East Asia and ...
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what are best methods for mrsa screening in hospital?
methods for screening MRSA are based on PCR (mecA detection) and MRSA latex test and culture.
I need to know sensitive, specific and cost-effective methods for diagnosis MRSA infection on one work day ...
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What's the difference between reaction norms and phenotypic plasticity?
I'm trying to understand better these two concepts, but I cannot see a clear difference yet.
Reaction norm: "set of phenotypes that can be produced by an individual genotype when exposed to different ...
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Where can I find DNA decryption research? [closed]
What is the name of the science that studies the mathematics of DNA?
Where can I learn about maths, statistics, types of code, numbers, patterns and graphs for genes and information found in DNA?
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How does a neutral allele change relative to a nearby allele under selection?
Suppose I'm looking at a gene being selected against (A) that's decreasing at a rate ($\Delta$P). If there's a nearby allele that is neutral (B) am I correct to assume that B will decrease with A at a ...
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Can Females Songbirds Have Male Plumage?
Male birds are colorful for courtship displays, females are dull for camouflage. But, is written in a website somewhere that sometimes, when females birds are sterile, they grow male plumage due to ...
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Is there natural occurrence of induced pluripotency / expression of Yamanaka factors and what is the evolutionary explanation of that?
Is there natural biological processes in which the full (full reprogramming into pluripotent state) or partial (partial reprogramming, stopped before point-of-no-return, preserving the functional ...
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is it possible for a son to inherit an allele on a Y chromosome?
Obviously, the only way for one to be male is to inherit the Y chromosome, but are there alleles on the y chromosomes? Or is it just automatically the recessive trait without an allele.
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Rationale behind Most Recent Common Ancestor (MRCA)?
My main question is this -
I heard Richard Dawkins say in a video that after 1000s of years, any given individual alive today will be either an ancestor to ALL of the humans (in that future time) or ...
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N value in a GWAS?
Just like the title says. I am reading about a GWAS but I don't know much about them. I understood most of it but I couldn't figure out what the "n" value was.
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Recombination due to crossover, outcome?
Garden peas normally have 7 pairs of chromosomes (n=7, 2n=14). Please calculate how many different types of gametes can be produced through the meiotic process if no crossover happens. If cross-over ...
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Need help to determine % difference between DNA-strand from two different haplotypes. Known nucleotide diversity and more
Backround:
229 DNA sequences
493 bp in length
Haplotype diversity: 0.9956
Average number of nucleotide differences: 12.50544
Polymorphic sites: 145
Nucleotide diversity: 0.02426
Is it possible ...
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How to search for a DNA sequence in a genome on ENA (European Nucleotide Archive)?
I have to do a search for small DNA sequences in the genome of an organism in ENA. I have the accession number and project id. However, I can't download the whole genome because of the download size ...
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Criteria for exchange of gene
I want to know what exactly determines whether this kind of recombination between two strands is allowed or not as it is said that after recombination the recipient may get new genes which logically ...
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1answer
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What is the cause of “imbalanced” linkage disequilibrium?
With perfect linkage disequilibrium ($D' = 1, R^2 = 1$), you might have the following table of counts for the alleles:
B b
A 100 0
a 0 100
With "...
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How does the difference in the sequences of a dominant and a recessive allele of a gene help in the expression of the gene? [duplicate]
When an organism is heterozygous at a specific locus for a gene and carries one dominant and one recessive allele, the organism will express the dominant phenotype. These alleles vary in their ...
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Understanding genetic similarity in humans [duplicate]
I was reading "Blueprint" by Robert Plomin (online preview on webpage) and got stuck when I got to these two sentences in the prologue:
"We are the same as every other human being for more than 99 ...
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Phenotypes caused by mutations in mitochondrial DNA?
Will mutations in mitochondrial DNA necessarily affect phenotypes?
I have some cursory knowledge of serial endosymbiotic cell theory, and find it difficult to consider that the DNA of the former ...
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2answers
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In marine DNA viral diversity studies, what would “paradigm of rampant mosaicism” refer to?
The recent paper in Cell Marine DNA Viral Macro- and Microdiversity from Pole to Pole describes the (huge) new Global Ocean Viromes 2.0 (GOV 2.0) dataset.
In the Results and Discussion section, the ...
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How do researchers define the region a lead SNP encompasses?
As I understand it, a lead SNP captures the variance for all unmeasured SNPs in a region due to it's low p-value and high linkage disequilibrium. However, in different papers the region size differs (...
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1answer
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How to do a nucleic acid or genome and amino acid search [closed]
I have been looking to find a database where i can search for genome and amino acid search. Are there any open source databases available for the same.
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Are SNPs always in linkage disequilibrium with other SNPs
Is it possible to have a SNP that is not found is be non-randomly associating with any other SNP?
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Is complete dominance actually a genotypic process?
An example often stated for codominance is blood groups, where both alleles version of the protein is expressed and can be found in the cell membrane.
An example of incomplete dominance often given ...
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Is DNA actually like source code repository?
So after reading articles like "People Use Just 8.2% of Their DNA" etc., and thinking a bit... I got this idea:
What if DNA is actually like a software source code repository? You know, it has "...
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1answer
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skin colouration in thalassemia
Now when i was studying about thalassemia, I read that anaemia is its major characterstic. I can understand that fact. But it was also written that the skin gets pale.
Wikipedia says that the skin ...
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Absorbance anomaly
The standard concentration for absorbance of 1 for ssDNA is 33 ug/ml, while for RNA it is 40 ug/ml. I can't find the reason for the difference in this value for these two macro-molecules. My professor ...
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Intein Splicing
Currently I am trying to read and understand this paper on intein splicing.
https://sci-hub.tw/https://www.ncbi.nlm.nih.gov/pubmed/22001202
However, I'm a little confused with Figure 4.
Why do the ...
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What are primary reasons for the failure to localise/anchor sequences in genome assemblies?
My question concerns the incorporation of individual sequence reads into chromosomes during gene sequencing projects, especially those with larger genomes such as Drosophila melanogaster or Homo ...
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Control of protein by DNA sequence with respect to RNA polymerase
I want to know how can a particular base sequence like the TATA box in the -10 region of a gene is able to regulate a protein's function like RNA polymerase? What kind of interaction really occurs?Is ...
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What is the gene for height?
Height doesn't seem to be linked to sex, which is surprising. I have seen ways to predict children's height and it involves taking the average of both parents height. Upon my search, I did not find ...
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1answer
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x-linked recessive inheritance and correlation for males
I was inspired by a discussion in this thread. Wikipedia lists a number of disorders linked to recessive genes on the x-chromosome. One typical example is red-green color blindness. Now wikipedia says ...
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What's the benefit of the average human body temperature?
Why would the body choose a resting temperature of 36.1c to 37.2c? It seems a very inefficient mechanism of survival considering the typical ambient temperatures on Earth. If there is a benefit to ...
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1answer
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How to download different kinds of data from NCBI eutils?
I have been researching NCBI eutils and wish to get some 'big data' from it. I know that I can construct queries to query one of (I think) 8 databases, like this:
...
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Maximum recombination frequency [duplicate]
During the process of crossing over, Why is the maximum possible recombination frequency between two genes equal to 50% and not more than that?
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The space of all human DNAs [closed]
This is both a math and biology question but I think it makes more sense for a biologist to answer it. My question is: what can be said, if anything, about the space of all possible human DNAs (for a ...
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Is Wikipedia a good source of taxonomy? [duplicate]
I have been quite interested in biology lately,and I would like to know whether it is a good choice to look up taxonomic information there.
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1answer
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If DNA methylation inactivates genes, does DNA demethylation activate them?
DNA demethylation can be passive or active. The passive process takes place in the absence of methylation of newly synthesized DNA strands by DNMT1 during several replication rounds – for example, ...
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Possible combinations in the Meiosis' Telophase 1
As you might already know
Meiosis is the process in eukaryotic, sexually-reproducing animals that reduces the number of chromosomes in a cell before reproduction $^{[1]}$
One of the reasons why ...
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Repopullation after a mass extinction [duplicate]
Is it possible to restart the whole human species with less than 10 individual.
let say that the whole human species was wipe out of the surface of the earth by a catastrophe only 8 different couple ...
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1answer
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What is the difference between Regulatory Gene and Modifier Gene?
If both controls the expression of another gene by physically or genetically interacting with the target gene, which attributes make "Regulatory gene" different from "Modifier gene" or vice-versa?
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The Viceroy Evolution Paradox [duplicate]
The viceroy butterfly generates a toxin compound which make it distasteful to predators. Biologists agree that the viceroy must have developed this trait as a passive defence mechanism to prevent ...
