Dobzhansky, Bateson, and the genetics of speciation

Article Abstract:

Geneticist Theodosius Dobzhansky and H.J. Muller discovered in 1936 that interacting complementary genes causes hybrid sterility and inviability. A similar discovery, however, was accomplished by William Bateson in 1909. Despite the similarity of their findings, Dobzhansky and Muller may not have based their research on Bateson's model since this was not widely published. Furthermore, Bateson supported Mendelian theories and rejected natural selection which Dobzhansky, Muller and other modern geneticists incorporated in their studies.

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Somatic mutation favors the evolution of diploidy

Article Abstract:

A comparative study of the mean fitness of asexual haploid and diploid populations shows that evolution of diploidy in both asexual and sexual populations is favored by somatic mutations, as reflected during partially recessive deleterious mutations and adequately common somatic mutation. This effect of somatic mutation also explains the diverse phylogenetic distribution of haploidy and diploidy populations.

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The population genetics of speciation: the evolution of hybrid incompatibilities

Article Abstract:

The process of speciation is modelled as the accretion of genic incompatibilities between diverging populations. Speciation is caused by the accretion of complementary genes. The model reveals that all the hybrid incompatibilities are initially assymmetric. The genic incompatibilities according to the taxa increases more than the linear increase in time.

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