question on chromosomes

[HumblePie]

And except for Androgen Insensitivity Syndrome, none of those chromosome Triospy disorders are inhereted. It's just spontaneous and can happen to anyone's child. For X-Syndrome (XO) it's the fault of the mother's egg only having 22 chromosome pairs and no sex chromosome. For the others, it's typically the sperm carrying an extra sex chromosome.

What's funny is that in some cases with even the extra sex chromosome, it gets "flushed out" or even partially flushed out. What that means, is say the sperm has 24 chromosomes instead of 23 which make 47 instead of 46. But as soon as the cells start dividing, they drop that extra chromosome like the trash it is. Sometimes, it's not always successful in dropping that extra chromosome in ALL cells, which is a really rare condition where half the cells in the body have 47 chromosomes and half have 46. This condition is called Mosaicisim. However, It's only non-mental afflicting when Mosaicisim affects the sex chromosome. If it's a problem with any other chromosom, you are going to get mental retardation of some sort.

 

[HumblePie]

got alot of info from this website...

http://www.wrongdiagnosis.com/genetics/chromosome.htm

I also edited out my original statement. The site and others say that YO, YY, or YYY are completely impossible to date as nothing has ever been found or medically journaled so far, not even from still born fetus.

 

[HumblePie]

Also, what's interesting to note, that genetic disorders relating to chromosome pattern problems afflicted by the mother are caused more often when an older woman gives birth and has had only 1 or no kids before almost reachig menopause but still conceiving a child.

I guess that's another reason men are more interested in younger women. It's instict to give your child the best possible chance and mating with older women tends to have more possible complications for both the child and mother then a young woman would have.