hemizygosity

[hĕm′ĭ-zī-gŏsĭ-tē]

n.

The state of having unpaired genes in an otherwise diploid cell; men are normally hemizygous for the genes on the X-chromosome.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.