Q. No.Which is the most common mechanism of genetic variation in the population of a sexually reproduction organism?
1. Transduction
2. Chromosomal aberrations
3. Genetic drift
4. Recombination
1. Transduction
2. Chromosomal aberrations
3. Genetic drift
4. Recombination
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A population will not exist in Hardy-Weinberg equilibrium if:
1. Individuals mate selectively
2. There are no mutations
3. There is no migration
4. The population is large
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Which of the following had the smallest brain capacity?
1. Homo erectus
2. Homo sapiens
3. Homo neanderthalensis
4. Homo habilis
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The wings of a bird and the wings of an insect are:
| 1. | Homologous structures that represent convergent evolution. |
| 2. | Homologous structures that represent divergent evolution. |
| 3. | Analogous structures that represent convergent evolution. |
| 4. | Phylogenetic structures that represent divergent evolution. |
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Industrial melanism is an example of
1. Neo Lamarckism
2. Neo Darwinism
3. Natural selection
4. Mutation
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Following are the two statements regarding the origin of life
a. The earliest organisms that appeared on the earth were non-green and presumably anaerobes.
b. The first autotrophic organisms were the chemoautotrophs that never released oxygen
On the above statements which one of the following options is correct?
1. (a) is correct but (b) is false
2. (b) is correct but (a) is false
3. Both (a) and (b) are correct
4. Both (a) and (b) are false
Which of the following structures is homologous to the wing of a bird?
1. Dorsal fin of a shark
2. Wing of a moth
3. Hind limb of Rabbit
4. Flipper of whale
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Analogous structures are result of
1. Divergent evolution
2. Convergent evolution
3. Shared evolution
4. Stabilizing selection
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Which of the following is correct sequence of events in the origin of life?
I. formation of protobionts
II. synthesis of organic monomers
III. synthesis of organic polymers
IV. formation of DNA based genetic systems
1. I, III, II, IV
2. II, III, I, IV
3. II, III, IV, I
4. I, II, III, IV
Genetic drift operates in
1. Large isolated populations
2. Non-reproductive populations
3. Slow reproductive populations
4. Small isolated population
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