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  • Name the law that states that the sum of allelic frequencies in a population remains constant. What are the five factors that influence these values?

Name the law that states that the sum of allelic frequencies in a population remains constant. What are the five factors that influence these values?

 

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Hardy Weinberg Principle states that the sum of allelic frequencies in a population remains the same through generations. The total of allelic frequencies in a population is 1.

Frequency of allele A=p

Frequency of allele a=q

p+q=1

In a diploid individual,

Frequency of allele AA=p^{2}

Frequency of allele aa=p^{2}

Frequency of allele Aa=2pq

This can be shown by the following equation which is derived from the algebraic identity

\left ( P+q \right )^{2}=p^{2}+q^{2}+2pq=1

The extent of evolutionary change can be evaluated by measuring the difference between the measured values of these values from the expected value.

Following five factors influence these values:

  1. Gene migration or gene flow
  2. Genetic drift
  3. Genetic recombination
  4. Mutation
  5. Natural selection

 

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