The XY sex-determination system is the sex-determination system found in
humans, most other ... Males have two distinct sex chromosomes (XY), and are
called the ... This and other factors result in ...
Mar 14, 2012 ... What is the big difference about the X and Y chromosomes that make the
difference between male and female people? Do the cells just ...
Mar 23, 2005 ... Men have one X chromosome and one Y chromosome, the latter being ... the
inactive X chromosome could explain some of the differences between men ... of
the genes are expressed at higher levels in females than in males.
The key is the X chromosome, the "female" sex chromosome that all men and ...
Females can differ from each other almost as much as they do from males in the
way ... candidate genes that could explain differences between men and women.
So for all of the genes on the autosomes, both males and females have two
copies. ... The differences in sex chromosomes between males and females
leads to ...
Aug 3, 2012 ... Nadeau reports that the splenium is larger in females than males, and this size
difference creates more brain activity. This in turn allows men ...
Aug 3, 2015 ... Photo credit: Male and female. ... But the key to difference between men and
women – and chimps – lies not just in the number of ... But the Y chromosome is
not all male-specific; 24 genes in its top little bit are shared with the ...
Oct 24, 2013 ... The genetic difference between men and women is 15 times greater than ... We'
ve been taught that other than X and Y, males and females are ...
Is it true that the genetic difference between human males and females is as big
as ... The Y chromosome contains proportionally far more non-coding DNA than ...
Oct 15, 2010 ... There are many biological differences between males and females that are
beyond the obvious differences at a gross, macro level (e.g., height, ...