Questions tagged [gene]

The basic unit of heredity which encodes for some function RNA or protein product.

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5answers
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Do men and women have the same number of genes?

As far as I know, humans have 23 pairs of chromosomes, each one which contains a particular amount of genes. But in the "last" pair, men have a XY pair chromosome, and women have a XX pair chromosome. ...
6
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4answers
631 views

Genes and Intelligence

Assuming that intelligence has a genetic component, • do we know which genes contribute to it? and, if so, • can we predict intelligence from genomic analysis?
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2answers
6k views

Are eukaroytic promoters located in the 5' UTR region?

I was wondering if promoter sequences are located on 5'UTR region in eukaryotic organisms?
6
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2answers
399 views

Which DNA elements belong to the definition of a gene?

I see a lot of different DNA elements mentioned as part of a gene (talking about eukaryotes): The length of DNA following the promoter is a gene and it contains the recipe for a protein. (video) ...
4
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2answers
565 views

Gene and alleles

This is a multiple choice question: Consider a gene, ABC, which codes for an enzyme involved in the metabolism of sugars. There are two known alleles of this gene, ABC1 and ABC2. Which statement ...
2
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1answer
2k views

What exactly are genes, DNA and chromosomes. How do they relate to each other and what is their function? [closed]

So I am new to biology and I have been reading, and searching the web, but I couldn't understand the whole framework of a cell. So as I understood: A DNA, is a double chain of Nucleotides (A,T,G,C ...
1
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1answer
2k views

Doubts regarding definition of upstream/downstream genes and cognate protein

With respect to the research paper, there are a few things I didn't understand: 1. What is upstream and downstream gene 2. This paper identifies proteins that help in secretion, but does not identify ...
3
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2answers
4k views

Interpretation of picture of human chromosomes

Does this picture show sister chromatids or homologous chromosomes? If they are homologous then what is YY? If they are sister chromatids then do homologous chromosomes ever appear like this (with the ...
2
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1answer
643 views

Evolutionary elimination of recessive gene

As recessive gene is suppressed, why over millions of year of evolution have not wiped them away completely, why don't they just go extinct, as people with those genes go extinct?
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2answers
890 views

Are genes on the 5' to 3' strand only?

I confused myself during studying, and wanted to confirm something. Since transcription via RNA polymerases only takes place in the 5'to 3' direction, that would mean that that 5' to 3' strand is the ...
0
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1answer
71 views

How to find a gene sequence?

So I need to learn how to find the sequence of a gene, polyphenoloxidase. Please do not do this for me. Tell me how to approach the problem. I have found : https://www.ncbi.nlm.nih.gov/gene and ...
0
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1answer
276 views

IBD-value in pedigree with inbreeding

I have a question about IBD. Please see the figure below. How many pairs of alleles are IBD for X and Y, or what is the IBD value for X and Y. Is it four (4)? I have seen it to be maximally 2, but ...