Genotypes | AA | Aa | aa |
Frequency | 22% | 62% | 16% |
List I | List II | ||
A. | Mesozoic Era | I. | Lower invertebrates |
B. | Proterozoic Era | II. | Fish & Amphibia |
C. | Cenozoic Era | III. | Birds & Reptiles |
D. | Paleozoic Era | IV. | Mammals |
1. | Dominance |
2. | Whether it is autosomal linked or sex linked |
3. | Forces such as natural selection |
4. | The number of alleles present for a particular gene |
Assertion (A): | Variations on which natural selection acts, arise as a result of random mutations. |
Reason (R): | A new variation may, or may not, be adaptive. |
1. | Both (A) and (R) are True but (R) does not correctly explain (A). |
2. | Both (A) and (R) are True and (R) correctly explains (A). |
3. | (A) is False and (R) is also False. |
4. | (A) is True but (R) is False. |