Definition of Gene Frequency
The fraction of all alleles that occur at a given locus in a specified population is known as:
- Genotypic frequency
- Phenotypic frequency
- Gene frequency — Correct Answer
- Allelic diversity
Explanation:
Correct Answer: Gene frequency
Gene frequency (allele frequency) is the fraction of all alleles that occur at a given locus in a specified population.
Hardy-Weinberg Relationships
- Gene frequencies: p (for allele A) and q (for allele a); p + q = 1
- Genotypic frequencies: P (AA) + H (Aa) + Q (aa) = 1
- p = P + ½H; q = Q + ½H
- P = p²; H = 2pq; Q = q²
Important: Genotypic frequency of offspring depends only on gene frequencies of parents, not on genotypic frequencies of parents (Hardy-Weinberg principle).
📚 About this Topic — Animal Genetics & Breeding
This multiple choice question is from Animal Genetics & Breeding, Animal Refresher. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from Animal Genetics & Breeding to strengthen your preparation.
