Q. No.The tendency of population to remain in genetic equilibrium may be disturbed by
1. Random mating
2. Lack of migration
3. Lack of mutations
4. Lack of random mating
1. Random mating
2. Lack of migration
3. Lack of mutations
4. Lack of random mating
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Forelimbs of cat, lizard used in walking; forelimbs of whale used in swimming and forelimbs of bats used in flying are an example of
1. Analogous organs
2. Adaptive radiation
3. Homologous organs
4. Convergent evolution
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Which one of the following are analogous structures?
1. Wings of Bat and Wings of Pigeon
2. Gills of Prawn and Lungs of Man
3. Thorns of Bougainvillea and Tendrils of Cucrbita
4. Flippers of Dolphin and Legs of Horse
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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
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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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