In the Hardy-Weinberg equation, what portion represents the...

In the Hardy-Weinberg equation, what portion represents the frequency of individuals that do not exhibit a recessive disease but are carriers of a recessive allele?
a. $q$
b. $p^{2}$
c. $2 p q$
d. $q^{2}$
e. both $b$ and $d$

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Key Concepts

Heterozygote Frequency (Carriers)

The heterozygote frequency is given by the term 2pq in the Hardy-Weinberg equation, and it represents individuals who carry one copy of the dominant allele and one copy of the recessive allele. This concept is particularly important when discussing carriers of recessive diseases, as these individuals do not exhibit the disease symptoms but can pass the recessive allele to their offspring.

Hardy-Weinberg Principle

The Hardy-Weinberg Principle is a foundational concept in population genetics which states that allele and genotype frequencies in a population remain constant from generation to generation in the absence of evolutionary influences such as natural selection, mutation, migration, or genetic drift.

Genotype Frequencies

Genotype frequencies, expressed in Hardy-Weinberg equilibrium as p^2 for the dominant homozygotes, 2pq for the heterozygotes, and q^2 for the recessive homozygotes, represent the proportions of individuals with different combinations of alleles in a population.

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