Glossary
There are currently 2 names in this directory beginning with the letter X.
X linkagea genetic phenomenon involving a gene located on the X chromosome; the typical pattern of X linkage involves recessive alleles, such as that for hemophilia, which exert their effects when passed from mother to son and are more likely to be exhibited by males than females
X-inactivationphenomenon in a female by which one X chromosome (either the maternally or paternally derived X) is randomly inactivated in an early embryonic cell, with fixed inactivation of that same X in all cells descended from that cell