The average heterozygosity of Drosophila melanogaster is estimated to be about 14%, which means that on average, 14% of a fruit fly's gene loci are heterozygous.
The typical percentage of organisms that are heterozygous for a given collection of gene loci, which serves as a gauge of genetic diversity within a population.
Heterozygous : A population's members are heterozygotes at that locus. A heterozygous person has two genes for a trait, one from the mother and the other from the father, but they are not identical. Therefore, the population's heterozygotes share the same proportion as the likelihood that two genes are present.
The three heterozygote classes' frequencies can be added directly to determine heterozygosity, while the three homozygote classes' frequencies can be added together and the sum subtracted from one to determine homozygosity.
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