[The hypothesis about the origin of the senescence mechanism].
The first Metazoa on the Earth were probably immortal. The loss of immortality was an effect of the organism complication in the course of the struggle for the environmental resources. As a result of the natural r-K-selection mutations, shortening or prolonging life, were preserved in species of which individuals became mortal.
A V
AV
Makrushin
D000375:Aging / Q000235:genetics*; D000818:Animals; D005075:Biological Evolution; D012641:Selection, Genetic