Problems in the formation of chromosomes, gonads ... while the ovaries of a normal 46,XX female secrete neither. In CAH, the absence of a critical enzyme allows a 46,XX fetus to produce androgens ...

Female (XX) mammals inherit one X chromosome from each parent, but males (XY) receive an X from their mother and a Y sex chromosome from their father. X and Y chromosomes determine not only the ...

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 ...

It behaves like a supergene, meaning it contains a large block of DNA that no longer mixes with its normal X chromosome counterpart ... ability to cheat during female reproduction.

Another may be born with mosaic genetics, where some cells have XX (female) chromosomes and others have XY (male ... awareness of gender diversity – and show that even different is normal. A website ...

X inactivation only occurs in cells with multiple X chromosomes, which explains why almost all calico cats are female. X inactivation exists in two different forms: random and imprinted.

Sufferers are almost exclusively males because they only have one X chromosome and need just one recessive allele to show the condition. Only in very rare cases a female will have two recessive ...