- (of a species or individual organism) having two unlike gametes.
Origin of heterogametic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- genetics denoting the sex that possesses dissimilar sex chromosomes. In humans and many other mammals it is the male sex, possessing one X-chromosome and one Y-chromosomeCompare homogametic
- Producing dissimilar gametes, such as those of human males, who produce two types of spermatozoa, one bearing the X-chromosome and the other bearing the Y-chromosome.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.