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Hardy-Weinberg Equation

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Question

write the formula to calculate allele frequency in future generations according to Hardy-Weinberg genetic equilibrium.

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Solution

Hardy-Weinberg Equation for calculating allele frequencies:

p² + 2pq + q² = 1,
where:
p =frequency of dominant allele
q =frequency of recessive allele

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Q. Assertion :According to Hardy-Weinberg Equilibrium, the frequency of an allele remains the same generation after generation. Reason: The only way to bring about a change is by natural selection.

Q. Read the statements (i-iv) and choose the correct option:
i. Increase in melanized moths after industrialization in Great Britain is a proof of Natural Selection.
ii. More individuals acquiring mean character value cause disruption.
iii. Change in allelic frequency leads to Hardy-Weinberg equilibrium.
iv. Genetic drift changes allelic frequency in future generations.

Q. Read the following statements and select the correct option.
(i) Increase in melanised moths after industrialisation in Great Britain is a proof for natural selection.
(ii) When more individuals of a population acquire a mean character value, it is called disruption
(iii) Changes in allelic frequency in a population will lead to Hardy-Weinberg equilibrium.
(iv) Genetic drift changes the existing gene or allelic frequency in future generations.

Q. Read the following statements and select the correct option.
A. Increase in melanised moths after industrialisation in Great Britain is a proof for natural selection.
B. When more individuals of a population acquire a mean character value, it is called disruption.
C. Changes in allelic frequency in a population will lead to Hardy-weinberg equilibrium.
D. Genetic drift changes the existing gene or allelic frequency in future generations.

Q. According to Hardy-Weinberg principle, allele and genotype frequencies in a population will remain constant from generation to generation in the absence of other evolutionary influences. It makes several assumptions which were given below.
i. Random Mating
ii. Sexual Reproduction
iii. Non-overlapping Generations
iv. Occurrence of Natural Selection
v. Small size of population

Identify two assumptions which are not needed for a population to reach Hardy-Weinberg Equilibrium?

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