Despite the fact that the basis of sexual reproduction is a single universal mechanism - the fusion of gametes, however, different groups of organis

Amphimixis

Despite the fact that the basis of sexual reproduction is a single universal mechanism — the fusion of gametes, however, different groups of organisms have their own versions of the sexual process. And in each case forms a different genetic structure of the offspring that has a great importance for the evolution of species.

Amphimixis (from Greek “amphi” — “both sides” and “mixis”) — is the most common method of sexual reproduction, when the egg of one individual is fertilized by sperm (spermatozoon) of another individual. This method of sexual reproduction is inherent in all dioecious organisms, as well as the majority of animals-hermaphrodites (diagram 14). In plants amphimixis concept can be considered identical to the concept of cross-pollination. This method of fertilization shows the main advantage of sexual reproduction: each individual becomes a genetically unique, as it contains a specific combination of genes. Taken from http://worldofschool.org

Diagram 14. Some common species of flora and fauna, reproducing via amphimixis: a — red clover; b — goat willow; c — dragonfly banded demoiselle; d — cep (boletus)
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