Enzyme Variability in the Drosophila willistoni Group, I. Genetic Differentiation Among Sibling Species

AUTOR(ES)

Ayala, Francisco J.

RESUMO

We have studied by gel electrophoresis the variability of 14 structural genes in four sibling species, Drosophila willistoni, D. paulistorum, D. equinoxialis, and D. tropicalis. Samples of about 30 populations from different parts of the distribution areas of each species were examined. Genetic variants are found at every locus; 67% of the loci are polymorphic, having two or more alleles, the rarer of which has a frequency of 5% or higher.

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