The most important part of the Y chromosome is the master sex gene called SRY, which triggers a fetus' development as a biological male. "The X and Y were once upon a time just an ordinary pair of ...

What makes the Y chromosome so special (despite having far fewer genes than its X counterpart) is that it contains the SRY ...

If the Y chromosome is present in the embryo's cells, a gene within the short arm of the chromosome called SRY will turn on, initiating a chemical chain reaction that will turn on other genes and ...