In the Hardy - Weinberg principle, p2 + 2pq + q2 = 1. q2 represents the frequency of the:
Correct answer: D. Homozygous recessive
- A. Homozygous dominant
- B. Heterozygous dominant
- C. Heterozygous recessive
- D. Homozygous recessive
- E. Blended genes
Explanation
q2 represents the homozygous recessive trait in the Hardy-Weinberg principle.It is calculated by squaring the frequency of the recessive allele q, where q is the frequency of the recessive allele and p is the frequency of the dominant allele. The entire equation is p2+2pq+q2 where p2 is the homozygous dominant frequency and 2pq is the heterozygous frequency.
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Evolution describes heritable change in populations over generations through variation, natural selection and adaptation. Lamarckism explains inheritance of acquired characteristics, while Darwinism explains selection of favourable inherited variations; these historical explanations must not be confused with the modern genetic account of evolutionary change.
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