Q. No.According to fossils that have been discovered till now, the origin and evolution of man started from which country?
1. France
2. Java
3. Africa
4. China
In which condition, the gene ratio remains constant for any species?
1. Sexual selection
2. Random mating
3. Mutation
4. Gene flow
The sequence of which of the following is used to know the phylogeny?
| 1. | m-RNA | 2. | r-RNA |
| 3. | t-RNA | 4. | DNA |
What is true for individuals of the same species:
1. Live in the same niche
2. Live in the same habitat
3. Interbreeding
4. Live in different habitat
In which era reptiles were dominated:
1. Coenozoic era
2. Mesozoic era
3. Paleozoic era
4. Archaeozoic era
Convergent evolution is illustrated by:
1. Rat and dog
2. Bacterium and protozoan
3. Starfish and cuttlefish
4. Dogfish and whale
Which one of the following sequences was proposed by Darwin and Wallace for organic evolution?
| 1. | Overproduction, variations, constancy of population size, natural selection |
| 2. | Variations, constancy of population size, overproduction, natural selection |
| 3. | Overproduction, constancy of population size, variations, natural selection |
| 4. | Variations, natural selection, overproduction, constancy of population size |
Random genetic drift in a population probably results from:
1. Highly genetically variable individuals
2. Interbreeding within this population
3. Constant low mutation rate
4. Large population size
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In recent years, DNA sequences (nucleotide sequence) of mt-DNA and Y chromosomes were considered for the study of human evolution, because:
| 1. | They are small, and therefore, easy to study |
| 2. | They are uniparental in origin and do not take part in recombination |
| 3. | Their structure is known in greater detail |
| 4. | They can be studied from the samples of fossil remains |
Industrial melanism is an example of:
| 1. | Drug resistance |
| 2. | Darkening of the skin due to smoke from industries |
| 3. | Protective resemblance with the surroundings |
| 4. | Defensive adaptation of skin against ultraviolet radiations |
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