In a population, the genotype frequencies are: f(A1A1) = 0.59; f(A1A2) = 0.16; f(A2A2) = 0.25. What are the frequencies of the two alleles at this locus? (1) A1=0.59 A2=41 […]
Category: CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
How to Calculate Allele Frequency and Expected Genotype Numbers: A Step-by-Step Guide
The following genotypes were observed in a population Genotype Number HH 90 Hh 60 hh 50 Which of the following is the correct frequency of H allele […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
How to Calculate the LN Allele Frequency in an M-N Blood Type Population
The frequency of M-N blood types in a population of 6129 individuals is as follows:The frequency of LN allele in this population is (1) 0.4605 (2) 0.2121 (3) 0.5395 (4) […]
CSIR NET Life Science Previous Year Questions and Solution on Emergence of Evolutionary Thoughts
Disruptive Selection: How Nature Favors Extremes and Drives Evolutionary Diversity
Selection in which two extreme phenotypes leave more offspring than the intermediate phenotype is called (1) directional selection. (2) disruptive selection. (3) stabilizing selection. (4) neutral selection. Correct answer: (2) […]
CSIR NET Life Science Previous Year Questions and Solution on Emergence of Evolutionary Thoughts
How Stabilizing Selection Maintains Both Alleles in a Population
If natural selection favors an average phenotype by selecting against extreme variation, under such condition (1) Both alleles will coexist in population (2) Only dominant alleles will exist (3) Only […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Which Characteristics Are Incorrect for Hardy-Weinberg Equilibrium? Understanding Population Genetics Assumptions
A scientist is using the Hardy-Weinberg equation to assess if a population is in equilibrium or is evolving. She recorded the following characteristics for this population: A. The size of […]
CSIR NET Life Science Previous Year Questions and Solution on Emergence of Evolutionary Thoughts
Heterozygote Advantage: How Both Alleles Persist in a Population
In a population individuals having heterozygous phenotype are more favored then homozygous dominant which are more favored then homozygous recessive genotypes, under such condition (1) Recessive alleles would be lost […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Which Factors Cause Changes in Allele Frequencies? Understanding Hardy-Weinberg Equilibrium Disruptions
The Hardy-Weinberg principle states that allele frequencies in a population will remain constant over generations if certain assumptions are met. A. Random mating B. Mate choice C. Small population size […]
CSIR NET Life Science Previous Year Questions and Solution on Emergence of Evolutionary Thoughts
Types of Natural Selection in Drosophila: Stabilizing, Disruptive, and Directional Selection Explained
The body weight of adult female of a strain ofDrosophila is 1.8±0.45 mg (mean ± standard deviation).In a laboratory experiment, each of the 3 groups (A, B, C) of this strain […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Hardy-Weinberg Principle: When Will Allele Frequencies Remain Constant in a Population?
The Hardy-Weinberg principle comes from considering what happens when Mendelian genes act on population. The model predicts that there will be no change in allele frequencies when (1) Migration into […]
