Molecular Evolution Activities
 

This is a comprehensive bibliography (under construction) of primary and secondary sources on the neutral theory of molecular evolution. It currently covers the period 1973-2001.

Author :

Sukhodolets, V. V.

Year :

1991

Title :

The Mechanism of Vertical Evolution and the Theory of Neutrality

Journal :

Genetika

Volume :

27

Issue :

10

Pages :

1685-1696

Date :

Oct

Short Title :

The Mechanism of Vertical Evolution and the Theory of Neutrality

Alternate Journal :

Genetika

Custom 2 :

ISI:A1991GM52900001

Abstract :

The basis of the process of vertical evolution is the evolutionary cycle in which it is achieved: (1) divergence of genes of a succeeding species as a consequence of the racial ecological differentiation; (2) combining the diversified genes within a hybrid organization. The hybrid form becomes domineering, due to selection for widening of the ecological potential of organisms: such selection happens under the conditions of intraspecific competition at the end of the evolutionary cycle. There is stabilizing selection in favour of the original genotype at the first stage of the cycle, whereas, <> selection leading to a change of the ecological potential of a species takes place at the second stage of the cycle. The latter is accomplished virtually by means of rigorous periodic selection for rare pleiotropic mutants, each such event being followed by stabilizing selection. Therefore, in the course of vertical evolution, stabilizing selection prevails which corresponds to a postulate of the neutral theory. It is proposed that the genetic drift which is taken for a basis of evolution in the neutral theory can be imitated by accidental capture of non-selected neutral mutations in the process of the directional selection mentioned at the final stage of the evolutionary cycle.

Notes :

Times Cited: 2 GM529 GENETIKA
 -- contributed by John Beatty, March 29, 2002