Chromosomes Abnormalities

Just had a class in human cytogenetics, then notice a lot of those mental retardation cases are from human sex chromosomes abnormalities, eg more sex chrmomsomes, less chromosomes. As if it's their characteristic that most of them will have mental retardation. And there's even once a study on those criminals who are violent, that that have extra copies of the Y chromosomes. (which is the so called the man chromosome). And most of these men are sterile. I think this is a way of God's to prevent any offspring from them. I learn more, and yet i know so little. It's utterly amazing how's human body works, especially in the case of the genes, the function of it, and all sort of other things that fascinated me. Human genes! Amazing!