All Questions
Tagged with genetics human-biology
162
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Is the amount of pigment in one feature (e.g. hair, eyes, skin) connected to the amount of pigment in another?
Let's say, genes allowing it, you have a red-haired child with hazel eyes. The hair is a darker/deeper orange color, so (if I recall correctly) having some degree of eumelanin—not much compared to ...
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Can someone with albinism have red hair with very pale skin and blue eyes?
I have heard of a type of albinism that occurs in races with darker skin that can give people red hair, but in the pictures I've seen, they usually have reddish-brown hair, a medium skin tone, and ...
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Is it possible for a non-self antigen to NOT be recognized by the body?
The amazing diversity of antigens that the body can recognize (by virtue of T and B cells that express receptors complementary to them) is truly fascinating. The explanation mooted for this is the ...
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Can We Determine the Cell Types Ab initio?
Is it possible to find all cell types in the human body and their respective transcriptomes by analyzing the human genome (and doing no physical experiment)?
If such a thing is possible in principle, ...
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131
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How many genes of an individual are homozygous?
We have 20000 to 25000 protein-coding genes. Considering an individual, how many of his\her protein-coding genes are homozygous? I am looking for an estimation of gene homozygosity ratio in human ...
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The village of Twins — Mystery behind and Scope
With the presence of more than 200 twins, Kodinhi , a village situated in Malappuram District in Kerala , India , is popularly known as the "Village of Twins".This phenomenon of large ...
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111
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Can the effect of an allele on height be context-dependent?
Some data is available on the effect alleles have on height. For example Common DNA Variants Accurately Rank an Individual of Extreme Height
However after browsing the literature I was not able to ...
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271
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Why do humans share over 99% of their genomes?
From Wikipedia
The haploid human genome (23 chromosomes) is about 3 billion base pairs long and contains around 30,000 genes.[33] Since every base pair can be coded by 2 bits, this is about 750 ...
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3
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518
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Is it possible to fuse DNA from two sperms and can a baby be born from that? [closed]
If this is possible, then isn't there going to be a chance to have a YY child?
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1
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611
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Are there any phenotypically visible examples of gene linkage in humans?
Are there any examples of two "visible" or "obvious" phenotypic traits in humans that are a priori unrelated, but which tend to be inherited together (i.e. their inheritance ...
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How do you determine "in which direction" DNA is shared between groups of people
In popular DNA ancestry tests you can read lines like "you have 2% neanderthal dna" or "you have 20% italian". How can you distinguish between a person having 20% italian vs ...
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Why is haemophilia unviable in later stages of life?
A sentence in my textbook is:
The possibility of female being haemophilic is extremely rare because mother of such a female has to be at least carrier and the father should be haemophilic (unviable ...
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153
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Monozygotic vs Dizygotic heteropaternal superfecundation
Update: I had a wrong assumption.
After triple checking, I now see that how ordinary monozygotic twins arise is 1 sperm and 1 ovum and then later the zygote splits up.
(1.1. and that that phil and ...
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Why is cognitive maturity related to organism lifespan in larger animals and mammals?
I am not a student of biology, so I should provide some context to me asking this rudimentary question. While doing a graduate-level course on Reinforcement Learning, the instructors focused on how we ...
- 153
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What causes the overactivity of keratin production and expression in the cells of the nail bed/ nail matrix after some traumata?
What is the cellular mechanism of traumatic(sterile) onychodystrophy(hypertrophy)? I.e one hits his toenail and has it removed twice( once after the first trauma and then again 3 years after the first ...
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