1. Gamete formation: Sperm and ovum are produced through gametogenesis. It causes sexual procreation.
2. Maintenance of chromosome parity: Diploid zygote is formed by the union of haploid sperm and egg. It maintains the equality of chromosomes in organisms.
3. Crossing over: Crossing over occurs between non-sister chromatids during cell division.
4. Protection of heredity: The heredity of organisms is preserved through gametogenesis.
5. Variation: Gametogenesis causes variation in organisms.
6. Evolution: Gametogenesis has a role in evolution.