Question

Choose the wrong statement regarding Hardly-Weinberg principle :

• A. Allele frequencies in a population are stable and constant from generation to generation.
• B. Sum total of all the allelic frequencies in a population is 1.
• C. Variation due to genetic drift results in changed frequency of genes and alleles in future generations.
• D. Natural selection can lead to stabilisation, directional change or disruption.
• E. Genetic recombination helps in maintaining Hardy-Weinberg equilibrium.

Answer 1

The correct option is E Genetic recombination helps in maintaining Hardy-Weinberg equilibrium.

1. The Hardy Weinberg principle states that allele frequencies in a population are stable and are constant from generation to generation.

2. Sum total of all the allelic frequencies in a population is 1. Disruption in the total can be interpreted as accumulation or change in variations that results in evolution.

3. The various factors resulting in changed frequency of alleles are :

Gene migration or gene flow, Genetic drift, Mutation, Genetic recombination, Natural selection.

4. Natural selection can lead to :

• Stabilization: In which more individuals acquire mean character value.
  
• Directional changes: Occurs when more individuals acquire value other than the mean character value.
• Disruption: more individuals acquire peripheral character value at both ends of the distribution curve.

5. Genetic recombination distrupts allelic frequencies and disturbs Hardy-Weinberg equilibrium.

So, the correct answer is 'Genetic recombination helps in maintaining Hardy-Weinberg equilibrium'