Question:
Write two points of differences between asexual and sexual types of reproduction. Describe why variations are observed in the offspring formed by sexual reproduction.
Solution:
(a) Differences between Asexual and Sexual Reproduction
(b) Development of Variation in Sexual Reproduction:
Sexual reproduction produces a number of variations in the population due to
- Chance separation of chromosomes at the time of meiosis.
- Crossing over during meiosis.
- Chance combination of chromosomes during fertilization. It produces a unique combination of variations already accumulated by each individual in its DNA obtained from its parents,
- Mutations or defective DNA replication.