Numerical Problems/ISC/Class 12
Created by Titas Mallick
Biology Teacher • M.Sc. Botany • B.Ed. • CTET (CBSE) • CISCE Examiner
Created by Titas Mallick
Biology Teacher • M.Sc. Botany • B.Ed. • CTET (CBSE) • CISCE Examiner
Numerical Problems - Evolution
Here are some numerical problems based on the principles of evolution, focusing on the Hardy-Weinberg equilibrium.
In a population of 1000 individuals, 360 have the genotype AA, 480 have the genotype Aa, and 160 have the genotype aa. What are the frequencies of the alleles A and a in this population?
Solution:
Therefore, the frequency of allele A is 0.6 and the frequency of allele a is 0.4.
The frequency of a recessive allele in a population is 0.2. Assuming the population is in Hardy-Weinberg equilibrium, what is the frequency of the heterozygous genotype?
Solution:
Therefore, the frequency of the heterozygous genotype is 0.32 or 32%.
In a population that is in Hardy-Weinberg equilibrium, the frequency of the homozygous recessive genotype is 0.09. What is the frequency of the dominant allele?
Solution:
Therefore, the frequency of the dominant allele is 0.7.
If the frequency of the dominant allele (A) in a population is 0.4, what are the expected frequencies of the genotypes AA, Aa, and aa, assuming the population is in Hardy-Weinberg equilibrium?
Solution:
Therefore, the expected frequencies are:
/Numerical-Problems/ISC/Class-12/Unit_2_Chapter_3_Evolution_Numerical_Questions.mdx