So, say I get a set of chromosomes from my Mum which contains the X chromosome and the same from my Dad, but with the Y chromosome. I now have two sets of the same 22 chromosomes, plus an X and a Y.

For chromosome number one for example, is everything from my Dad’s side activated? My Mum’s? Or is is a random selection of genes within each chromosome?

And does the X chromosome do anything for me, or is it turned off, and only used if I pass it on to the next generation?

Follow up question: I believe that women actually recombine their X chromosomes when passing these on, but men can’t recombine X and Y. So everything on your Dad’s side stays the same. Does this have any impact? For example are you more likely to inherit genetic defects from your Dad’s side?

  • Chainweasel@lemmy.world
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    5 months ago

    They reside in the X chromosome and sometimes one of those genes has mutated. If you only have the mutated version you may be unable to see some colors.

    Also, with 2 x chromosomes it’s possible to get an extra set of cone cells and see more colors.

    Tetracromacy