Term Name:	W chromosome
Synonyms:
Definition:	The sex chromosome present in females of species in which the female is the heterogametic sex; generally, the sex chromosome that pairs with the Z chromosome in the heterogametic sex. The W chromosome is absent from the cells of males and present in one copy in the somatic cells of females.
Ontology:	GO: Cellular Component [GO:0000804]    QuickGO    AmiGO