heterozygote advantage


Also found in: Wikipedia.

heterozygote advantage

[‚hed·ə·rō¦zī‚gōt ad′van·tij]
References in periodicals archive ?
With teacher guidance, students will become familiar with many genetics concepts: probability, dominant and recessive traits, sex-linked traits, penetrance, dosage compensation, Barr bodies, pleiotropy, founder effect, aneuploidies, environmental interactions, allele polymorphisms, heterozygote advantage, and the outcomes and ethics of genetic screening.
Thalassemia also is an example of a polymorphism maintained by heterozygote advantage in areas where malaria is endemic.
Good genes models of sexual selection have recently expanded to consider nonadditive, or compatible-gene effects on fitness (Neff and Pitcher 2005) with particular emphasis on heterozygote advantage.
Some traits exhibiting heterozygote advantage are expressed mainly by males, such as song-learning ability (Marshall et al.
Researchers have suggested that the mutant cftr gene persists so widely because of a heterozygote advantage.