(February 1, 2014 at 9:25 pm)Pickup_shonuff Wrote:(February 1, 2014 at 9:15 pm)pineapplebunnybounce Wrote: Genome is 46 chromosomes for humans. Genes are scattered across all chromosomes. During meiosis, Chromosomes replicate and then split into 2 cells of 46 chromosomes each. They then split again into 4 cells of 23 chromosomes each. This is what happens during spermatogenesis. So you end up with 23 chromosomes in each sperm, half of the dad's genome.
As for "same functions", 46 chromosomes belong to 23 homologous pairs. Which means they have pairs that are not identical but function in the same capacity. One of each pair will form the 23 chromosomes in sperms.
Ah, gotcha. In spermatogenesis, is it random which genes will end up in the 23 chromosomes? Or are they selected for some reason? Also, during this process, is there a different process for regulatory genes as opposed to specialized genes?
They all end up in the 23 chromosomes
you have more than 1 sperm I assume? Basically 4 sperms per meiosis, so to speak. Chromosomes are sequestered into each sperm as a whole, so whatever gene is on it goes with it. Each chromosome has loads of genes, we still do not know all of their functions.What do you mean by regulatory and specialized genes?
