heterogametic


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Related to heterogametic: homogametic

het·er·o·ga·met·ic

(het'ĕr-ō-gă-met'ik),
Having sex gametes of contrasting types; human males are heterogametic.
Synonym(s): digametic
[hetero- + G. gametikos, connubial]
Farlex Partner Medical Dictionary © Farlex 2012

heterogametic

(hĕt′ə-rō-gə-mĕt′ĭk)
adj.
1. 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.
2. Of or relating to heterogametes.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

het·er·o·ga·met·ic

(het'ĕr-ō-gă-met'ik)
Having gametes with sex chromosomes of contrasting types; human males are heterogametic.
[hetero- + G. gametikos, connubial]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
Infertility as opposed to inviability appears to be the most normal sex-skewed outcome, as heterogametic infertility is known to outnumber heterogametic inviability about 10:1 in Drosophila and mammals (Wu and Davis 1993).
Mims, "Evidence for female heterogametic sex determination in paddlefish Polyodon spathula based on gynogenesis," Aquaculture, vol.
To date, all the mapping studies have confirmed that the female willows are the heterogametic gender, while the males are the homogametic sex, suggesting a ZW sex determination system in willows, and the gender locus is consistently mapped to the centromeric region on willow's chromosome XV [38-40].
Females are heterogametic (Z0 or WZ) and males are homogametic (ZZ), although sporadic rearrangements created multiple sex chromosome systems in some species (Traut et al.
Sexual differentiation in dioecious strains is based on a pair of sex chromosomes, the male being heterogametic (XY, the Y chromosome allegedly larger (Sakamoto et al., 1998), unlike mammals, but like some other plants), producing an approximately 50:50 sex ratio.
Previous studies on fluted pumpkin reported an XY system of sex chromosomes with homogametic XX female and heterogametic XY male [6].
In a minority of dioecious plants, sex determination depends on sex chromosomes, usually an XY system, in which males are heterogametic (XY) and females are homogametic (XX) [1-3].
In mammals, the heterogametic male XY system uses SRY, a sex-determining gene on the Y chromosome (SRY) to initiate the male pathway.
Higher possible genomic mortality of heterogametic (ZW) females compared with homogametic males (ZZ) allows the males of these species to offer sacrifice to save the females, which has the responsibility of rearing the brood.
mori, are designated ZW for the heterogametic female and ZZ for the homogametic male (Yokoyama et al., 2003; Nagaraju, 1996).
In birds, females are the heterogametic sex (ZW) and males are homogametic (ZZ) (Ellegren 1996).