[The nature of genetic recombination].
The biological evolutionary axiom proposed earlier by the author states that in the absence of genetic recombination the evolution of organic forms would be impossible. In the present paper the literature data are considered, illustrating the role of genetic recombination in evolution. It is urged that a tendency towards an increasing complexity of biological organization results from periodical recombinational combining of the diverged genes as well as the whole genomes of different origin. The alternative mechanism implying the production of duplications from the identical gene copies or whole genomes is considered to be unlikely. According to the biological evolutionary axiom, the origin of life is connected with the appearance of a mode of reparation of crystalline type aggregates--the precursors of DNA by means of exchanges among their constituents. A hypothesis is proposed that in the process of recombination a certain distribution of the 6-amino bases (adenine, cytosine) along the DNA molecule is settled, with respect to the 6-carbonyl bases (guanine, thymine). It is proposed that the relative distribution of the bases mentioned influences electrostatic stability of the DNA molecule as a crystalline associate.
D000818:Animals; D001483:Base Sequence; D005075:Biological Evolution; D003434:Crossing Over, Genetic; D004260:DNA Repair; D005819:Genetic Markers; D006801:Humans; D008957:Models, Genetic; D011003:Ploidies; D011995:Recombination, Genetic
D005819:Genetic Markers
Priroda geneticheskikh rekombinatsiĭ.