Q. No.Genetic drift is :
1.
random changes in gene frequency in a population
2.
generational fluctuations in gene frequencies that produce no effect
3.
changes due to interbreeding with other species populations
4.
the effect of mutations as they spread through neighbouring populations
Which one of the following would cause the Hardy-Weinberg principle to be inaccurate?
| 1. | The size of the population is very large. |
| 2. | Individuals mate with one another at random. |
| 3. | Natural selection is present. |
| 4. | There is no source of new copies of alleles from outside the population. |
The theory of spontaneous generation stated that:
| 1. | life arose from living forms only |
| 2. | life can arise from both living and non-living |
| 3. | life can arise from non-living things only |
| 4. | life arises spontaneously, neither from the living nor from the non-living |
Palaeontological evidence for evolution refers to the:
| 1. | development of the embryo | 2. | homologous organs |
| 3. | fossils | 4. | analogous organs |
The appearance of antibiotic-resistant bacteria is an example of:
1. adaptive radiation
2. transduction
3. pre-existing variation in the population
4. divergent evolution
1. Sedimentary rocks
2. Igneous rocks
3. Metamorphic rocks
4. Any type of rock
Which type of selection explains industrial melanism observed in moth, Biston betularia?
| 1. | Stabilising | 2. | Directional |
| 3. | Disruptive | 4. | Artificial |
In 1953, S. L. Miller created primitive earth conditions in the laboratory and gave experimental evidence for the origin of the first form of life from pre-existing non-living organic molecules. The primitive earth conditions created include:
| 1. | low temperature, volcanic storms, an atmosphere rich in oxygen |
| 2. | low temperature, volcanic storms, reducing atmosphere |
| 3. | high temperature, volcanic storms, non-reducing atmosphere |
| 4. | high temperature, volcanic storms, reducing atmosphere containing CH4, NH3 etc. |
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 |
The differential success in the reproduction, of an organism, in a given environment, is :
| 1. | Adaptation | 2. | Natural Selection |
| 3. | Adaptive radiation | 4. | Saltatory evolution |
© 2026 GoodEd Technologies Pvt. Ltd.