List of top Life Science Questions on Molecular Genetics asked in GATE EY

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?
The production of anthocyanin pigments in pea flowers requires the presence of at least one dominant allele in each of two independently assorting genes, C and P. The presence of anthocyanin results in purple flowers, whereas its absence gives white flowers. A cross between two double heterozygous (CcPp) plants is performed. What is the expected ratio of plants with purple flowers to plants with white flowers?
Match the diseases to the pathogens that cause them. Diseases Pathogens P) Avian malaria i) Virus Q) COVID-19 in humans ii) Plasmodium R) Chytrid disease in frogs iii) Mosquito iv) Fungus