The bones of forelimbs of whale, bat, cheetah and man are similar in structure, because
1. one organism has given rise to another
2. they share a common ancestor
3. they perform the same function
4. they have biochemical similarities
Analogous organs arise due to
1. divergent evolution
2. artificial selection
3. genetic drift
4. convergent evolution
(p + q)2 = p2 + 2pq + q2 = 1 represents an equation used in
1. | population genetics | 2. | Mendelian genetics |
3. | biometrics | 4. | molecular genetics |
Appearance of antibiotic-resistant bacteria is an example of
1. adaptive radiation
2. transduction
3. pre-existing variation in the population
4. divergent evolution
Evolution of life shows that life forms had a trend of moving from:
1. land to water
2. dryland to wetland
3. freshwater to sea water
4. water to land
Viviparity is considered to be more evolved because
1. | the young ones are left on their own |
2. | the young ones are protected by a thick shell |
3. | the young ones are protected inside the mother's body and are looked after they are born leading to more chances of survival |
4. | the embryo takes a long time to develop |
Fossils are generally found in
1. sedimentary rocks
2. igneous rocks
3. metamorphic rocks
4. any type of rock
For the MN-blood group system, the frequencies of M and N alleles ar 0.7 and 0.3 respectively. The expected frequency of MN-blood group bearing organisms is likely to be
1. 42%
2. 49%
3. 9%
4. 58%
Industrial melanism observed in moth, Biston betularia, is which type of selection?
1. Stabilising
2. Directional
3. Disruptive
4. Artificial
The most accepted line of descent in human evolution is
1. | Australopithecus → Ramapithecus → Homo sapiens → Homo habilis |
2. | Homo erectus → Homo habilis → Homo sapiens |
3. | Ramapithecus → Homo habilis → Homo sapiens |
4. | Australopithecus → Ramapithecus → Homo erectus → Homo habilis → Homo sapiens |