This explains the exclusively sexual reproduction of such fecund organism as elms and oysters. Once lost, asexual reproduction may be difficult to evolve secondarily. This explains the presence of such exclusively sexual, low-fecundity organisms as the higher vertebrates. 展开 关键词:...
Discusses the reasons why such a wide variety of organisms reproduce sexually despite the fact that it extracts a high price from the organisms. Benefits of cloning or asexual reproduction; Time demands of sex; Arguments for variability; Description of conjugation in bacteria; Effects of sexual repr...