Copulation

Copulation is a term in biology that means either an obligatory or random fusion of gametes, or the process of fusion of two structures (for example, cells). For example, in botany, copulation is the fusion of the pollen tubes of the male gamete and the wall of the female cell, which preserves the genetic individuality of the male pollen. In turn, the copulative-convolutional movement is a fusion of the metric tonic part of the central and peripheral segments of the pair