hemizygous

Pronunciation:(HEH-mee-ZY-gus)

Definition: Describes an individual who has only one member of a chromosome pair or chromosome segment rather than the usual two. Hemizygosity is often used to describe X-linked genes in males who have only one X chromosome. This term is sometimes used in somatic cell genetics where cancer cell lines are often hemizygous for certain alleles or chromosomal regions.GeneticsHealth professional

2016-02-08