**They disproved the idea that****dominant alleles’ percentages will rise throughout generations**, which causes recessive alleles’ percentages to sink.## What is the importance of the Hardy-Weinberg principle in evolutionary biology?

**Evolutionary** Implications of the **Hardy**–**Weinberg** Theorem The **Hardy**–**Weinberg** Theorem demonstrates that Mendelian loci segregating for multiple alleles in diploid populations will retain predictable levels of genetic variation in the absence of forces that change allele frequencies.

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The **Hardy**–**Weinberg equation** is a mathematical **equation** that can be **used** to calculate the genetic variation of a population at **equilibrium**. If the p and q allele frequencies are known, then the frequencies of the three genotypes may be calculated using the **Hardy**–**Weinberg equation**. …

## What do the terms in the Hardy-Weinberg equation represent?

The **terms** of this **equation are** defined as follows: p = the frequency of the dominant allele in a population. q = the frequency of the recessive allele in a population. 2pq = the frequency of the heterozygous dominant genotype.

In this equation, p² is the predicted frequency of homozygous dominant (AA) people in a population, **2pq** is the predicted frequency of heterozygous (Aa) people, and q² is the predicted frequency of homozygous recessive (aa) ones.

The **Hardy**–**Weinberg equilibrium** is a principle stating that the genetic variation in a population will remain constant from one generation to the next in the absence of disturbing factors.

## FAQ

**What are Hardy-Weinberg Problems?**

**No gene mutations may occur and therefore allele changes do not occur**. 2) There must be no migration of individuals either into or out of the population. 3) Random mating must occur, meaning individuals mate by chance. 4) No genetic drift, a chance change in allele frequency, may occur.

**Why is the Hardy Weinberg equation not realistic?**

**can be disrupted by deviations from any of its five main underlying conditions**. Therefore mutation, gene flow, small population, nonrandom mating, and natural selection will disrupt the equilibrium.

**What did Hardy-Weinberg believe?**

**after one generation of random mating genotype frequencies will be p**. In the absence of other evolutionary forces (such as natural selection), genotype frequencies are expected to remain constant and the population is said to be at Hardy–Weinberg equilibrium.

^{2}, 2pq, and q^{2}**What did Hardy and Weinberg do?**

**calculate the genetic variation of a population at equilibrium**. In 1908, G. H. Hardy and Wilhelm Weinberg independently described a basic principle of population genetics, which is now named the Hardy-Weinberg equation.