Sex is an expensive and risky business. It steals time and drains precious nutrient resources. And each act of reproduction runs the risk of messing up carefully crafted genetic blueprints. So why do we do it? The answer might seem obvious to you.
24.1C: Fungi Reproduction
C: Fungi Reproduction - Biology LibreTexts
The evolution of sexual reproduction is an adaptive feature which is common to almost all multi-cellular organisms and also some single-cellular organisms with many being incapable of reproducing asexually. Prior to the advent of sexual reproduction , the adaptation process whereby genes would change from one generation to the next genetic mutation happened very slowly and randomly. Sex evolved as an extremely efficient mechanism for producing variation, and this had the major advantage of enabling organisms to adapt to changing environments. Sex did, however, come with a cost. In reproducing asexually, no time nor energy needs to be expended in choosing a mate. And if the environment has not changed, then there may be little reason for variation, as the organism may already be well adapted. Sex, however, has evolved as the most prolific means of species branching into the tree of life.
Sexual reproduction is how most animals and plants reproduce. Organisms that reproduce sexually have two different sexes : male and female. In sexual reproduction, offspring are produced when sperms fertilise eggs from the female. Various steps are involved in this process.
Sexual reproduction occurs when living organisms combine genetic information from two different types. The male gender produces a mobile gamete which travels to fuse with a stationary gamete that is produced by the female gender. Gametes are germ cells that are able to unit with germ cells from the opposite gender. The primary advantage of sexual reproduction is that it encourages the survival of a species. Whether discussing people, plants, or animals, mates are attracted to one another based on a hormonal perception of superiority.