sex gene pool theory of speciation

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A theory of speciation (q.v.) applicable to all higher sexual organisms and based on evidence for the rapid evolution of sexual traits. This theory partitions the species gene pool (q.v.) into (1) those genes that primarily affect mating and reproduction and (2) those that are essential for other aspects of the life of the organism (its development, metabolism, viability, etc.). According to this theory, genes in pools 1 and 2 are selected differentially, with sex-related genes changing preferentially during the early stages of speciation. See Chronology, 2000, Singh and Kulathinal; mate choice, sexual selection.

Subjects: Genetics and Genomics.

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