The sex chromosome present in both sexes of species in which the female is the heterogametic sex. Two copies of the Z chromosome are present in each somatic cell of males and one copy is present in females
References
1.GOC: mah 2.GOC: mr 3.ISBN0321000382 4.PMID20622855 5.Wikipedia: ZW sex-determination system
Legend
is an element of the parent element
is a part of the parent element
is related to the parent element
derives from the parent element
// at least 1 tissue/ enzyme/ localization link in this branch