Some bacteria are able to grow in Streptomycin containing medium due to:
1. Natural selection
2. Induced mutation
3. Reproductive isolation
4. Genetic drift
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 |
Diversification in plant life appeared:
1. Due to abrupt mutations
2. Suddenly on earth
3. By seed dispersal
4. Due to long periods of evolutionary changes