This indicates that the
Y chromosome gene is the strong one," Ward says.
The
Y chromosome contains eight palindromes, regions that are an astonishing 99.
Genetic Differentiation in South Amerindians is Relates to Environmental and Cultural Diversity: Evidence from the
Y Chromosome," American Journal of Human Genetics 68 (2001): 1485-1496.
The
Y chromosome data are "consistent with a recent Mongolian expansion.
Caption: Loss of the
Y chromosome (illustrated in blue next to an X chromosome) in men's blood cells is associated with a high risk of cancer.
He speculates that the palindromes enable the human
Y chromosome to constantly repair mutations, staving off its own degradation.
The
Y chromosome data support several other DNA studies indicating that modern humans arose from a small number of Africans who lived from 100,000 to 200,000 years ago, Harpending says.
Comparing the sex chromosomes of six species, Hoekstra found that the XY females have forms of the
Y chromosome unique to their species.
Over the course of evolution, the mammalian
Y chromosome has degenerated so much that it now shares few genes with its more robust counterpart, the X chromosome.
An egg fertilized by a sperm carrying a
Y chromosome becomes a boy.
The
Y chromosome passes solely from father to son, exactly like the cohen status.
The hidden benefit of going for the long-eyed males, Wilkinson suggests, is that these heartthrobs carry a tough
Y chromosome that increases a female's chances of having sons, which are XY.
