Write two points of difference between asexual and sexual types of reproduction. Describe why variations are observed in the offspring formed by sexual reproduction.
| Asexual Reproduction | Sexual Reproduction |
|---|---|
| Asexual reproduction is the process of making two or more daughter cells from one parent cell. | Sexual reproduction is the process of forming a diploid cell zygote from one haploid male gamete or one haploid female gamete. |
| In this only one parent is involved. | In this two parents are involved. |
| No variation occurs. | Variation occurs. |
| Gametes are not formed. | Gametes are formed. |
Sexual reproduction results in the perpetuation and the multiplication of the species. It contributes to the evolution of the species by introducing variations in a population and there are various reasons for this:
1. Genes are contributed by the two parents.
2. DNA replication leads to variation.
3. It leads to an increase in the number of individuals and hence contributes towards evolution.
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