Transcriptionally “silent” Barr bodies maintain gene equality in male (XY) and female (XX) cells. How are these unique sex chromosomes formed? "The sex of a somatic cell as highly ...

In each pair, one chromosome comes from the mother, and one from the father. Twenty-two pair of chromosomes are the autosomes and the 23rd pair that determines your gender (XY-male and XX-female). The ...

Homologous targets of Sry — the mammalian gene that directs male development — are known ... pigment gene that makes XX females white and XY males orange-red. The sex-determining region ...

The human Y chromosome, responsible for determining male sex, has been gradually shrinking over millions of years. This ...

Their research, titled “How the extra X chromosome impairs the development of male fetal germ cells ... XXY” instead of the usual “46, XY.” They usually lose large amounts of key ...