Q. No.Hardy-Weinberg equilibrium is known to be affected by gene flow, genetic drift, mutation, genetic recombination and:
1. evolution
2. limiting factors
3. saltation
4. natural selection
Which one of the following in birds indicates their reptilian ancestry?
| 1. | Scales on their heart |
| 2. | Four-chambered heart |
| 3. | Two special chambers crop and grizzlies in their digestive tract |
| 4. | Egg with a calcareous shell |
Darwinism explains all the following except:
| 1. | Within each species, there is variation |
| 2. | Organisms tend to produce more offspring than can survive |
| 3. | Offspring with better traits that overcome competition are best suited for the environment |
| 4. | Variations are inherited from parents to offspring through genes |
Which of the following is not true for a species?
| 1. | Members of a species interbreed |
| 2. | Variations occur among members of species |
| 3. | Each species is reproductively isolated from every other species |
| 4. | Gene flow does not occur between the populations of a species |
The diversity in the type of beaks of finches adapted to different feeding habits on the Galapagos islands, as observed by Darwin, provides evidence for:
1. origin of species by natural selection
2. intraspecific variations
3. intraspecific competition
4. interspecific competition
Age of fishes is also known as:
1. Permian Era
2. Silurian Era
3. Devonian Era
4. Ordovician Era
| 1. | Hyenas and wolves will become scarce. |
| 2. | Its gene pool will be lost forever |
| 3. | The wild areas will be safe for man and domestic |
| 4. | The population of beautiful animals like deer will get stabilized |
Variations caused by mutation, as proposed by Hugo de Vries, are:
1. small and directionless
2. random and directional
3. random and directionless
4. small and directional
A gene locus has two alleles A, a. If the frequency of dominant allele A is 0.4, then what will be the frequency of homozygous dominant, heterozygous and homozygous recessive individuals in the population?
| 1. | 0.16 (AA); 0.36 (Aa); 0.48 (aa) |
| 2. | 0.36 (AA); 0.48 (Aa); 0.16 (aa) |
| 3. | 0.16 (AA); 0.24 (Aa); 0.36 (aa) |
| 4. | 0.16 (AA); 0.48 (Aa); 0.36 (aa) |
© 2025 GoodEd Technologies Pvt. Ltd.