Questions tagged [genetics]

Genetics is the branch of biology that deals with the transmission and variation of inherited characteristics.

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Can we infect with “bad” genes other organisms? [closed]

We know that some organism's DNA stay with human for life (Herpes) and we also can, i think, design such "gene" that can interact with human's DNA-polymerase very intensive. If we attached this gene ...
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When is gene density an important parameter in experiments?

As per wikipedia definition, gene density is defined as: "In genetics, the gene density of an organism's genome is the ratio of the number of genes per number of base pairs, usually written in ...
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Barr body Giemsa staining

Not all the female cheek cells show Barr Bodies when stained with Giemsa stain? Only 30 to 40% female cells show Barr Bodies. Why? Our Experiment: We washed mouth twice with listerine to reduce ...
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DNA mutations in humans are generally bad, but why to they make viruses stronger?

When I read about DNA mutations in humans, the mutations are generally bad. When I read about mutations in viruses such as the recent emerging strains of COVID-19, however, it seems to be good for the ...
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Question about probability of being a heterozygous carrier

A 26-year-old woman of Norwegian descent seeks genetic counseling. Her brother died at age eight of documented cystic fibrosis. Both of their parents are deceased. The woman undergoes DNA testing for ...
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Can there be traits which aren't possible objects of selection, e.g. beneath a “threshold of genetic noise”?

Is it possible that there are traits that might not be possible objects of the selection because of highly sensitive dependence on genotypes? The context of my thought came when I was having a ...
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DNA and Genes, which consists of which? It seems that the hot answer on quora is different to the nih post

This quora's answer has got 8.3k views and 20 Upvoters. "Genes are a part of the DNA." per nih, "Genes are made up of DNA, which is telling the truth." in my understanding, the quora version ...
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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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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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Genetic modifications in humans to prevent disease [closed]

I was reading an article about "designer babies", which was about how before birth the DNA can be modified so to achieve certain features. Can a technique such as this also be used to prevent diseases,...
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Recombination frequency

From Campbell Biology 2017, unit 15, test your understanding question 5: Using the information from problem 4, scientists do a further testcross using a heterozygote for height and nose morphology. ...
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In Genetic Engineering, why are we limited to existing creatures when it comes to creating a new species?

So, I don't know much about Biology. Haven't studied it since high school. So please excuse me if my science isn't proper. I'll do my best. Let's say for example you wanted to make a fire breathing ...
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Why is the size of the human penis not in proportion to that of the rest of the body?

According to this research https://qph.fs.quoracdn.net/main-qimg-2ffcc3b19663af67c96ac1be8f3d6351-c it is more likely for tall men to have large penis but there are still many tall not having large ...
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Could we back-breed birds into dinosaurs? [closed]

Do some species of birds have dinosaur DNA? Seeing as how birds evolved from dinosaurs. I presume this isn't possible as I haven't seen anything else about it on the internet but it's interesting to ...
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Are there any animals whose genome haven't been sequenced yet? [closed]

I referred to a few websites and it seems like almost every animal's genome has been sequenced. However, are there any animals that haven't yet been sequenced? If so, can you provide the list here or ...
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Why doesnt the SARS-Cov-2 affect other animals?

Why doesn't the coronavirus affect animals like dogs and cows? I know that the SARS-CoV-2 is a zoonotic virus i.e. it can affect both humans and other animals. I also know that the DNA composition ...
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Reproduction in animals

Humans have acquired knowledge about their environment through many observations. Today, humans have wide variety of resources to gain knowledge about reproduction in human beings and other ...
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Some related questions about DNA differences in a single organism

If you took a DNA sample from someone's brain and that same persons liver at more or less the same time, would that DNA - all else being equal (e.g. no mutations from radiation) - be exactly the same? ...
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Can Euchromatin convert into Heterochromatin?

I know that Heterochromatin can convert into Euchromatin but is the reverse possible? If yes, then How?
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Has anyone done a GCTA of leg length? [closed]

There is extensive genomic research on height, but nobody seems to have done a gcta of leg length.
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This pedigree chart is satisfied by Autosomal dominant, Autosomal Recessive, X- linked Dominant. Is this be possible? [closed]

I've checked this pedigree chart for Autosomal Dominant, Autosomal Recessive, X- linked dominant and X-linked recessive. This chart satisfies for Autosomal Dominant, Autosomal Recessive and X- linked ...
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Why do we need only 1 X chromosome?

In females, one of the X chromosomes will be deactivated randomly to form a Barr body. Why do barr bodies form? We have 2 copies of any other chromosome. Why don't they form for our 22 other ...
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Is sonic hedgehog a gene or a protein or both?

Is sonic hedgehog a gene or a protein or both? I think sonic hedgehog is okay as a name for a chemical. Having said that, I am a little bit concerned about the way sonic hedgehog seems to mean the ...
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metaphors for explaining the role of DNA in the cell [closed]

Various metaphors are used to explain the central role of DNA in a cell to laypersons. These include blueprint, recipe, catalogue, instruction manual etc. I even heard someone describing DNA as a '...
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Could DNA replication fail in the far future? [closed]

Assuming that all environmental conditions on Earth remain the same in distant future, the tendency of nature to increase entropy would cause the chemistry and the mechanism of DNA replication to ...
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are clones siblings to the original?

i have a question about cloning, if a person had his/her DNA sample like hair or blood used to make a clone wouldn't that clone be that same person's brother or sister since they share the same ...
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What genes are the muscles, nerves, bones and blood? [closed]

I have a question about genes. The question is that bones, muscles, nerves and blood are each made on which genes. Father or mother genes? Does the person take any of the characteristics of the mother ...
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Can 2 people give rise to billions? Adam and Eve 2.0 [closed]

With with the advancement of GMOs the idea of giving rise to humans from 2 people is possible making questions like this invalid? How many people are required to maintain genetic diversity? With ...
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Is it possible to seperate either father or mother chromosomes from a sperm? [closed]

If we were to use a Flow cytometry can it seperate either the father or mother chromosomes from a sperm?
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will we get animal like superpowers if our introns end up expressing themselves? (purely hypothetical question) [closed]

so we have around 3.3*10^9 bp in human haploid cell and not all the genomic sequences are expressed at the time of splicing of hnRNA to form mRNA the introns are removed so in case if they are not ...
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Are lockdowns enhancing COVID-19? [duplicate]

It is well known that through natural selection organisms pass down "well-equipped" genes to their offspring. Therefore, the newer generations are better adapted to their environment. If ...
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Alleles and Ploidy [closed]

I was recently studying inheritance and variation and came across a sentence: A diploid organism can show only two alleles How is this possible?
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Can genetic engineering be performed without a laboratory setting? [closed]

I'm becoming more interested in genetic engineering as I learn more about it, and it's becoming more and more apparent that there's very few resources on genetic engineering at home. A similar ...
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Genetics and Heredogram - Proving the teacher is wrong

I want serious help here. I'm in first year of medical school and I jut had my second test in Genetics. One question of the test gave us a heredogram and asked us what was the most probable type of ...
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Ugly people and genome [closed]

Why haven't ugly and dumb people been eliminated be evolution ? Why do they still exist despite Charles Darwin theory of natural selection.
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Can the self correction mechanisms in cells imply that the DNA code to a degree is self modifying

There is an argument that proteins coded by 20 amino acids via the DNA program has so few successful protein formation that a search never can reach the complexity of it via natural selection and ...

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