List of top Life Science Questions asked in GATE Ecology and Evolution

In conservation biology, which one or more of the following is/are used to calculate the effective population size, \( N_e \)?

Honey bees are haplodiploid, which means that the relatedness is, on average, expected to be 0.75 between:

Which two of the following processes can result in a decline in heterozygosity in populations? I) Inbreeding; II) Genetic drift; III) Mutation; IV) Random mating

Consider a randomly breeding population of squirrels with two morphs – white-striped and brown-striped. In a population, 16\% are white-striped individuals, while the rest are all brown-striped. The trait for stripes is governed by one gene where the allele for brown stripes is dominant. Assuming Hardy–Weinberg equilibrium, the frequency of the allele for white stripes would be \_\_\_\_\_\_\_\_\_\_\_. (Round off to two decimal places)

In a population, there are two morphs, A and B, which reproduce at equal rates. A mutates to B with probability \(p_1\), and B mutates to A with probability \(p_2\) such that \(p_1 \gg p_2\) (that is, \(p_1\) is much greater than \(p_2\)). Over time, which one of the following statements would be true about this population?

The molecular clock model assumes that mutation rates are:

A few years ago, a very small population of zebrafish became isolated by a newly built dam. As a result, which statement is most likely to be true about this population of zebrafish now?