Which statement is NOT true regarding genetic drift as an evolutionary force? (1) It is significant in small population (2) It generates variance in population (3) It leads to fixation […]
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CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Genetic Drift: How Chance Drives Random Changes in Population Genetics
Genetic Drift occurs by (1) Chance (2) Immigration (3) Emigration (4) Mutation Genetic drift is a fundamental concept in evolutionary biology, describing how chance events can lead to random changes in […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Genetic Drift: The Role of Random Changes in Gene Frequency in Population Genetics
Random change of gene frequency in a population is termed as- (1) Genetic drift (2) Gene flow (3) Mutation (4) Evolution What is Genetic Drift? Genetic drift is the change […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Genetic Drift: The Cause of Abrupt Changes in Gene Frequency in Small Populations
Abrupt changes in gene frequency in a small population is termed as (1) Gene migration (2) Genetic drift (3) Gene flow (4) Gene fluctuation Genetic diversity is the cornerstone […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Bottleneck Effect: How Natural Disasters Drastically Alter Genetic Diversity in Populations
Disaster such as earthquake or fire may reduce the size of population drastically and the genetic make up of the small surviving population is unlikely to be representative of make […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Founder Effect: Understanding Abrupt Changes in Gene Frequency in Small Populations
Abrupt change in gene frequency of small population is termed as- (1) Genetic loss (2) Genetic erosion (3) Founders effect (4) Genetic load Founder Effect: The Abrupt Change in Gene […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
How to Calculate Equilibrium Allele Frequency Under Bidirectional Mutation
Consider an autosomal locus with two alleles A1 and A2 at frequencies of 0.6 and 0.4 respectively. Each generation, A1 mutates to A2 at a rate of µ = 1 […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
How Heterozygosity Declines with Selfing: Calculating Remaining Heterozygosity After Three Generations
In a plant species, a segregating line (one that contains both homozygotes and heterozygotes at a locus) can be made homozygous by repeated selfing for several generations. What is the […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
How to Calculate the Inbreeding Coefficient from Heterozygote Frequency After Inbreeding
The frequencies of two alleles p and q for a gene locus in a population at Hardy-Weinberg equilibrium are 0.3 and 0.7, respectively. After a few generations of inbreeding, the […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Which Statement About Genetic Variation and Small Populations Is Incorrect
Which one of the following statements is INCORRECT? (1) Loss of genetic variation occurs within a small population due to genetic drift. (2) The number of deleterious alleles present in […]
