Allele and genotype frequencies in a population will remain constant from generation to generation in the absence of all the following evolutionary influences, except:

1.Random mating2.Mutations
3.Natural selection4.Gene flow

Subtopic:  Sources of Variation |
 57%
From NCERT
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The loss of genetic variation that occurs when a new population is established by a very small number of individuals from a larger population is called as:

1.the bottleneck effect2.the founder effect
3.assortative mating4.random mating

Subtopic:  Hardy Weinberg Law | Sources of Variation |
 61%
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For differential success in reproduction, all the following must be present except:

1. Gene flow between populations.
2. Variations must be genetically inherited.
3. Certain variations allow an individual to produce more offspring that survive in the next generation.
4. There must be variations in the phenotypes of individuals.

Subtopic:  Sources of Variation |
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