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Question
Enumerate the differences between asexual and sexual reproduction. Describe the types of asexual reproduction exhibited by unicellular organisms.
Solution
| Asexual Reproduction | Sexual Reproduction | |
| 1. | It does not involve formation and fusion of gametes. | It involves formation and fusion of gametes. |
| 2. | It is uniparental. | It is generally biparental. |
| 3. | Reproductive units are somatic cells of parent. | Reproductive units are germ cells of parent. |
| 4. | It involves only mitotic divisions. | It involves only meiosis divisions. |
| 5. | Offspring are genetically similar to parents. | Offspring are genetically different from parents. |
| 6. | Fast and simple process. | Slow, elaborate and complex process. |
The types of asexual reproduction exhibited by unicellular organisms:
- Many single-celled organisms reproduce by binary fission (e.g., Amoeba, Paramecium), where a cell divides into two halves and each rapidly grows into an adult.
- In yeast, the division is unequal and small buds are produced that remain attached initially to the parent cell which eventually gets separated and mature into new yeast organism (cells).
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