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How many genes per 23 chromosomes in human genome? [closed]

It is estimated that humans have between 20,000 and 25,000 genes. Every person has two copies of each gene, one inherited from each parent. There are 46 chromosomes, half from the mother, half from ...
Naj's user avatar
  • 325
1 vote
0 answers
36 views

chromosome 19 and recombination

Im doing a project with structural variation created by recombination within the human genome during spermatogenesis, where im especially examining intrachromatid homolog recombination. I find that ...
RAHenriksen's user avatar
11 votes
2 answers
2k views

Why does human chromosome 19 have the second highest number of protein-coding genes?

While chromosome 19 only is the 19th largest autosomal chromosome, it contains 1440 protein-coding genes, and thus has the second highest number of protein-coding genes of any human chromosome. For ...
tsttst's user avatar
  • 1,597
0 votes
2 answers
306 views

Chromatids in metaphase?

Please see the following picture: In my book, the author claims that these chromosomes are in metaphase (a metaphase stopped by cholchicin). I don't understand why they don't have two chromatids...A ...
Paze's user avatar
  • 1,381
6 votes
3 answers
10k views

How many recombination events are there per generation in humans?

I'm looking for a reference that tells me how many recombenation events occur in humans from one generation to the next. Assuming that the human genome is a 3.3 GigaBases long DNA sequence, how many ...
R_User's user avatar
  • 231
2 votes
2 answers
196 views

Referencing the homologous chromosomes

There exist a co-ordinate system from chromosomes like "12p11.3". In this system, first integer range from 1 to 23 i.e it takes homologous chromosomes as a pair. If we want to distinguish among ...
DurgaDatta's user avatar
2 votes
3 answers
281 views

Can a new Y-chromosome be created?

The major gene of the Y-chromosome is SRY. Would it be possible to get the X-chromosome and add SRY to create a "fuller" Y-chromosome? What advantage does the skinny Y-chromosome give an individual ...
John Smith's user avatar
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