BELYAEV,D.K. EVOLUTIONARY-CONCEPT - 10 YEARS LATER

D.K. Belyaev's evolutionary concept is considered in terms of (1) expe rimental results obtained during studies on domestication mainly in re cent years and (2) modern views on evolution under extreme conditions and the role of the hierarchic system of regulation of genetic express ion in evolution. Changes in neuroendocrine regulation in the course o f long-term domestication are characterized, and the morphogenetic rol e of hormones and neurotransmitters is discussed. The effects of selec tion on the rate of some developmental processes and the importance of the resultant heterochronias for the morphogenetic consequences of se lection for behavior are described.