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The XY sex-determination system is the sex-determination system found in humans, most other ... Males typically have two distinct sex chromosomes (XY), and are called the ... This and other factors result in the sex differences in humans. .... as to produce fraternal twins equally weighted between one male and one female.


Mar 14, 2012 ... It is what our cells do with these chromosomes that makes a baby. ... X and Y chromosomes that make the difference between male and female ...


Apr 25, 2017 ... The main differences between males and females are the X and Y chromosomes. Among humans, two X chromosomes make a woman, and an ...


May 11, 2011 ... Just one query, what is the concept of male/female applied or ... XY chromosome complement in a gonadal female; either because SRY doesn't ...


Apr 4, 2013 ... Male vs Female Chromosomes. Male and female chromosomes are the sex determining chromosomes of an organism. These are also known ...


The biological differences between men and women result from two ... the Y chromosome resulting in XY gonadal dysgenesis, XX males, or XY females; defects ...


The sex chromosomes are the only factors that differ in the male and female zygote, .... the difference between XX and XY differs in gonadal males and females.


Men typically have one X chromosome and one Y chromosome in each diploid cell of their bodies. Women typically have two X chromosomes ...


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.


Jul 30, 2015 ... But the key to difference between men and women – and chimps – lies not ... But the Y chromosome is not all male-specific; 24 genes in its top little bit ... deleted, the skewing goes the opposite way, favouring female calves.