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#non-random mating

2 public questions tagged with this topic.

Hardy–Weinberg principle

Non-random mating mainly affects:

Genotype frequency reflects key principle in quiz on hardy–weinberg principle, where evolutionary mechanisms shape genetic variation and adaptation. In this context, Genotype frequency aligns with experimental and theoretical evidence from population genetics, behavioral ecology and molecular phylogeny. Textbooks like Campbell Biology, Futuyma Evolution and Hartl Principles illustrate supporting data. Understanding why Genotype frequency fits helps integrate natural selection, environment.

Ref: Hartl, Primer of Population Genetics, Hardy-Weinberg Equilibrium.

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Population Genetics

Non-random mating affects mainly

Random mating ensures genotype frequencies follow Hardy-Weinberg proportions p squared, two pq, q squared derived solely from allele frequencies. Nonrandom mating, including inbreeding or positive assortative mating based on phenotype, alters probability that similar genotypes pair, shifting genotype proportions while allele frequencies remain fundamentally unchanged in absence of other forces. For instance, consanguinity increases homozygosity at expense of heterozygosity. Therefore nonrandom mating primarily impacts genotype frequencies, causing apparent deviation from Hardy-Weinberg expectations, but does not systematically change p and q unless coupled with selection or drift.

Ref: Griffiths et al., Introduction to Genetic Analysis, 12th ed., Chapter 20: Nonrandom Mating Effects on Genotypes

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