| Assertion (A): | Evolution by natural selection works best on a population having no variation. |
| Reason (R): | A population having no variation always reproduces exponentially. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
| 1. | The process by which traits are inherited through acquired characteristics. |
| 2. | The differential survival and reproduction of individuals due to differences in phenotype. |
| 3. | The random distribution of alleles during gamete formation. |
| 4. | The migration of individuals between populations leading to gene flow. |