How many major adaptations attribute to humans evolutionary success

This enables better survival and reproduction compared with other members of the species, leading to evolution. Organisms can adapt to an environment in different ways. They can adapt biologically, meaning they alter body functions.

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.