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 ...

More than a decade after Henking's work, Nettie Stevens surveyed multiple beetle species and examined the inheritance ... XY system, maleness is determined by sperm cells that carry the Y chromosome.

Researchers have uncovered a "selfish" X chromosome in the fruit fly Drosophila testacea that manages to distort inheritance ...

Genetic inheritance is a bit like a ... majority of intelligence genes are on the X chromosome. Since women have two (XX) and men have only one (XY), the transmission of intelligence may be ...

Morgan’s group had already described sex-linked inheritance: male fruit flies, which receive just one X chromosome from their mothers, express any recessive genes on that chromosome, such as an ...

Transcriptionally “silent” Barr bodies maintain gene equality in male (XY) and female (XX) cells. How are these unique sex chromosomes ... to understand the inheritance of coat color.