Q. No.In replica-plate experiment some bacteria able to grow in penicillin containing medium due to
1. Natural selection
2. Reproductive isolation
3. Genetic drift
4. Crossing over
'Founder effect' is related to -
1. Gene recombination and Natural selection
2. Genetic drift and origin of new species
3. isolation and Natural selection
4. Hybridization and origin of new species
In Galapagos island, Darwin found different varieties of finches, originated from a common ancestor. The original variety of these finches was:-
1. Insectivorous
2. Vegetarian
3. Seed-eating
4. Cactus eating
Adaptive radiation does not follow which of the following statements?
| 1. | Blackbird on Galapagos islands observed by Darwin is an amazing example of Adaptive Radiation. |
| 2. | All the varieties of Finches evolved on the same island from original seed feeding finches to insectivorous and vegetarian finches. |
| 3. | Australian marsupials, which are similar to each other evolved from an ancestral stock but all within the Australian island continent. |
| 4. | More than one adaptive radiation appeared to have occurred in an isolated geographical area representing different habitats, known as convergent evolution |
What will be the frequency of homozygote dominant in a population of triploid organisms.
| 1. | p×p×p | 2. | AA |
| 3. | p | 4. | P |
Which of the following could evolve by the time of 500 mya?
| 1. | Jawless fishes | 2. | Invertebrates |
| 3. | Sea weeds | 4. | Lobefins |
Bryophytes evolved from
| 1. | Psilophyton |
| 2. | Rhynia type plants |
| 3. | Tracheophyte ancestors |
| 4. | Chlorophyte ancestors |
Zosterophyllum evolved from
| 1. | Psilophyton |
| 2. | Rhynia type plants |
| 3. | Tracheophyte ancestors |
| 4. | Chlorophyte ancestors |
Which of the following is distantly related among each other?
| 1. | Crocodiles | 2. | Snakes |
| 3. | Tuataras | 4. | Turtles |
The selecting agent in industrial melanism was:
| 1. | humans | 2. | toxins from smoke |
| 3. | birds | 4. | tree bark |
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