Q. No.In a random mating population in equilibrium, which of the following brings about a change in gene frequency in a non-directional manner?
1.
Mutations
2.
Random drift
3.
Selection
4.
Migration
Similarities in organisms with different genotypes indicate:
1. Microevolution
2. Macroevolution
3. Convergent evolution
4. Divergent evolution
The occurrence of endemic species in South America and Australia is because:
| 1. | these species have been extinct in other regions |
| 2. | of continental separation |
| 3. | there is no terrestrial route to these places |
| 4. | of retrogressive evolution |
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 |
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 |
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
Which evidence of evolution related to Darwin's finches:
1. Evidence from biogeographical distribution
2. Evidence from comparative anatomy
3. Evidence from embryology
4. Evidence from palaeontological
Which one of the following was obtained by S. Miller in his experiments on the origin of life before 1953:
1. Simple sugars
2. Amino acids
3. Nucleotide
4. Peptides
Industrial melanism is an example of:
| 1. | Natural selection | 2. | Mutation |
| 3. | Racial difference | 4. | Predation |
According to Oparin, which one of the following was not present in the primitive atmosphere of the earth?
1. Oxygen
2. Hydrogen
3. Water vapour
4. Methane
© 2024 GoodEd Technologies Pvt. Ltd.