Inbreeding depression and multiple regions showing heterozygote advantage in Drosophila melanogaster exposed to stress.

Abstract excerpt

Recent studies that reveal a correlation between heterozygosity and fitness in natural populations have rekindled interest in whether balancing selection is widespread or an evolutionary oddity. We therefore quantified heterozygote advantage at 12 microsatellite markers in both inbred and outbred crosses of Drosophila grown under different forms of environmental stress. As expected, inbreeding depression reduces...

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