All Questions
Tagged with genetics human-genetics
235
questions
7
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1
answer
785
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Are there any completely, or 'true', Mendelian traits that do not display any polygeny at all?
Recently, I learned about polygenic traits and it got me wondering, are there any truly Mendelian traits where the trait displayed exists in a total binary?
I have looked at some questions on the ...
- 73
0
votes
3
answers
110
views
Have there ever been "half-twins" who were halfway between siblings and twins?
Have there ever been two human siblings who were 75% or more genetically related?
- 401
1
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0
answers
44
views
How exactly are the eye color genes related?
How exactly are the gey (maybe aka EYCL1?), bey(2?) (aka EYCL3?), HERC2, and OCA2 genes related to each other? There are numerous sources that explain eye color in terms of OCA2's role in the creation ...
- 111
0
votes
0
answers
21
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What is the most accurate polygenic score for Alzheimer’s disease?
To date, which polygenic score (i.e. which study) has produced the largest effect size for Alzheimer’s prediction in out-of-sample validation?
- 401
0
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1
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134
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What is the exact definition of the term 'trait'?
A trait is a characteristic shown by an organism.
For example a Tt plant would show the 'tallness' trait.
It seems to me that, by analogy, sickle cell anaemia (SCA) carriers should show the 'normal' ...
0
votes
0
answers
133
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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 ...
- 1
0
votes
1
answer
55
views
How does positional memory in fibroblast cells work?
I have a question regarding how positional memory in fibroblasts work, specifically, where the memory comes from/how its made.
For example, the Salamander & other amphibians are able to regenerate ...
2
votes
0
answers
337
views
How pitch of a DNA Helix is 3.4 nm?
How pitch of a DNA Helix is 3.4 nm?
In the image that I have attached, the numbers with prime represent the number of base pair and normal numbers represent the number of gap elements between two base ...
- 121
0
votes
1
answer
198
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Is heritability just slope?
Is broad-sense heritability just the slope of the line that passes through the coordinates:
(1, The phenotypic correlation among monozygotic twins)
(0.5, The phenotypic correlation among dizygotic ...
- 401
1
vote
2
answers
497
views
What colour skin would the child of someone with albinism have?
My question is assuming the baby doesn't have albinism. If the mother has albinism and her family all has dark skin and the father doesn't have albinism and has light skin, would the baby just get the ...
- 11
0
votes
2
answers
119
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Can gene mutations cause Down's syndrome in humans?
I am working on an A levels questions:
Which of the following statements about gene mutation is incorrect?
A. It can occur in both somatic and sex cells
B. It can cause Down's syndrome in humans
C. ...
- 297
2
votes
0
answers
70
views
What is the heredity model of the following heredity tree?
I have the following heredity tree:
and I need to decide which heredity model it fits the most, with the least number of assumptions, from the following models:
autosome dominant
autosome recessive
...
- 139
2
votes
1
answer
242
views
Are all genes capable of being switched on or off?
Are all genes capable of being switched on or off or only some genes? Are there some genes that permanently do not have the functionality that enables them to be switched on or off?
Everything I have ...
- 25
2
votes
0
answers
31
views
How I can find the list of transcription factor proteins involved in transcription of a specific gene?
I want to get the list of transcription factor proteins involved in the transcription of the human SIRT1 gene. How can I access that?
- 29
0
votes
0
answers
36
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How do genetic variants of a gene moderate an association, leading to counterintuitive result?
I have run moderation analysis to study the interaction between SNP (dominant model) of a gene (A) with DNA methylation on cognition measures. For this, I have calculated the mean DNA methylation ...
- 29