Questions tagged [genetics]

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

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2answers
139 views

How did humans know the process of domesticating animals?

If people in ancient times had no scientific knowledge about natural selection and Darwinism, how were they knowledgeable about animal domestication and artificial selection? What tools and ...
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2answers
8k views

Behaviour of chromosomes and genes

I recently read a comparison between behaviour of chromosomes and genes - which had two statements understated - Independent pairs segregate independently of each other One pair segregates ...
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1answer
663 views

How does selection affect allele frequency?

Question People who are carriers for Blooms Syndrome have developed a selective advantage. How would this affect the allele frequency of the disease allele? My thoughts Natural selection will ...
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1answer
233 views

Law of Segregation (Genetics) [closed]

What if the two factors/different factors of a character did not segregate during gametogenesis and blended together?
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1answer
63 views

Somatic cell cloning always produces female offspring? [duplicate]

I was looking at the somatic cell cloning of goats. One of the advantages of the process said was All offspring produced are female. Now I'm confused. How is this the case? I know that the ...
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1answer
98 views

Why can't the mutation for this simple pedigree be X-linked recessive?

http://ocw.mit.edu/courses/biology/7-012-introduction-to-biology-fall-2004/exams/finalprac.pdf For question 7a on pages 10-11 of the above link, why can't the mutation be X-linked recessive? The ...
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1answer
45 views

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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1answer
62 views

Will our biological bodies be changed after we’ve occupied and settled Mars? [closed]

I had this question in mind for very long time, and I could not find a clear answer on the Internet, so I was hoping that you might know the answer. If we will bring life to planet Mars and a few ...
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1answer
1k views

Proteins in different organisms

I know that DNA is universal meaning that all organisms have the same 4 base pairs and also that the same codons code for the same amino acid in all organisms. What I am wondering is that say humans ...
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3answers
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Did cats evolve from monkeys ? or vice versa?

Did cats evolve from monkeys? or vice versa? How similar are the genes of cats and monkeys? What is the proof that they are related or that they are not related? Most monkeys climb in trees and ...
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4answers
411 views

Are biological systems engineered? They are often reverse engineered at a molecular level!! [closed]

Understanding biological systems, molecular biologists need to “reverse engineer” them. Is this evidence that the systems were engineered to begin with?
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1answer
48 views

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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2answers
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What are sex linked traits?

Which of the two definitions of sex-linked trait is correct? Traits controlled by genes present on the non-homologous region of sex chromosomes are called sex-...
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1answer
668 views

What are silent carrier traits? [closed]

I couldn't find a definition but I have come to know the following from google search: People who are carriers of a thalassemia gene show no thalassemia symptoms and might not know they're carriers....
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1answer
55 views

Is genetic equivalence a universal truism or are there exceptions?

Someone who I have been discussing scientific topics for some time came around to the notion that, on a biological level, the seed of a plant is not the same organism as the mature stage of the plant. ...
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2answers
124 views

Why isn't the human zygote considered a human life how is a living anatomically modern human defined biologically? [closed]

It has 46 chromosomes by default when healthy(Differences almost always are pathological) and has almost every biological functions, processes a Newborn or and Adult person has. It even invades ...
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1answer
422 views

Are androgenic-anabolic steroids a form of gene editing?

Is taking AAS a form of gene-editing? Steroids alter genes in some way since they allow people to build more muscle than what's naturally possible -- so they sort of "break" natural genetics somehow. ...
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1answer
221 views

Longest transcripts without isoforms

Does anyone know what genes produce the longest mRNAs? I am planning a project on synthetic introns and want to use stuffer fragments to vary intron size. Obviously they must not contain any splicing ...
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1answer
2k views

What is meant by topology of DNA? [closed]

I couldn't find anything on internet that would give a clear-cut idea about what it could be.
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1answer
59 views

Can amount of gene share in descendants be easily calculated? [closed]

I saw on the web an explanation on how to calculate amount of certain genes in a person. For instance: if your grandfather was French and your granny was an American then your father is 50 French and ...
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1answer
49 views

Difference Junk DNA and Pseudogenes [duplicate]

1-Are Pseudogenes and Junk DNA both Non-Coding DNA or they are different entity? How much Pseudogenes & Junk DNA do we have respectively? 2-I read that Non-Coding DNA has functions, my question ...
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1answer
131 views

Intelligence as measured by DNA tests

Suppose a person has an IQ of 130, as measured by a standard IQ test, when he is 18 years old. He then goes on to develop severe mental illness, which reduces his IQ to 100. After this, he takes a DNA-...
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1answer
48 views

Codons at for transcription vs translation [closed]

Why are start and stop codons present at translation level but not at transcription level? And how will I obtain a protein at transcription level? Thanks in advance
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2answers
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Genetic disease elimination: Possible?

This is a question having to do with my generation ship story but more specifically, genetics, and even more specifically, genetic disease. Here are the conditions as far as people with or without ...
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1answer
219 views

Methods to evaluate gene expression [closed]

I was wondering what method should i use if i want to evaluate if a gene is being expressed or not. The first method that came to my mind was Western blot , but i don't know if i could use others. I ...
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1answer
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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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2answers
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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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0answers
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Where from STOP CODONS come? [closed]

Recently I was reading about Molecular genetics. In which that is Do the stop codons which is present in mRNA come from DNA by transcription or it is attached after transcription.
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Why dont the key colors match up with the nodes on my MJN network in PopART?

When I run the MJN in popART the key colors don't match up with the nodes on the network. For example, The key color for "Asia" is green but on the network, other populations are showing up ...
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1answer
35 views

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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1answer
47 views

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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1answer
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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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1answer
52 views

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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1answer
44 views

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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1answer
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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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1answer
130 views

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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1answer
256 views

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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1answer
140 views

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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1answer
51 views

Why don't retroviruses kill more?

A retrovirus produces thousands of copies in days. If there are 10e12 cells in the body then it will infect all in four days. It would kill all animals in a few days after that. Why don't ...
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2answers
79 views

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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1answer
897 views

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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1answer
46 views

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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1answer
157 views

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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1answer
106 views

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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2answers
57 views

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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1answer
905 views

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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1answer
146 views

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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1answer
477 views

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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0answers
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Are there separate genes on the Y chromosome for each masculine trait, and separate genes on the X chromosome for each feminine trait? [closed]

Are the Y-linked genes for primary and secondary sexual traits, dominant over their X-linked counterparts? Is there a gene in the Y chromosome for big biceps and broad shoulders? Just as I promised, ...
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1answer
42 views

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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