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If you have the alleles A and a, then the The hardy-weinberg equation is:

A2 + 2Aa + a2 = 1

where a and A represent allele frequencies. So A2 would be the genotype frequency for AA. 2Aa is the genotype frequency for Aa. And a2 is the genotype frequency for aa.

Plug in whatever information you have into the equation and you can probably come up with an answer.

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12y ago
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13y ago

Use the Hardy-Weinberg formula for simple two locus alleles. p^2 + 2pq + q^2 = 1

say you have a population of 100 organisms. 60 of these are homozygous dominant ( the p ), so 60/100 give the frequency of this allele, 40/100 give homozygous recessive ( the q ) and the square root of both times 2 gives the frequency of the heterozygous. All must equal 1.

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13y ago

You can calculate Allelic frequency by using a formula postulated by Herdy-weinberg. (p+q)2 = p2+2pq+q2.

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11y ago

i donot know

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Q: How calculate the frequency of alleles in population?
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How many alleles for black fur are in the sample population and what percentage of allele frequency does that reprent?

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In a hardy-weinberg population with two alleles A and a that are in equilibrium the frequency of allele a is 0.1 what is the percentage of the population that is heterozygous for this alle?

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Does evolution happen on a genetic level?

Yes. The basic definition of evolution depends on changes in the frequency of alleles in a population.


How is an allele frequency different than a genotype?

The frequency of an allele is the total number of alleles of that type in a population where as genotype is the alleles present in all individuals in a population. The Hardy-Weinburg principle and its associated equations allow simple calculations of gene frequency. The basic equation is p+q=1: where p and q represent the dominant and recessive alleles. It is also simple to substitute the letters associated with the alleles you are dealing with for p and q. For example: If dealing green versus yellow where green is dominant and yellow is recessive green would be G and yellow would be g. Therefore G+g=1. In this example 40% of the population is yellow or 0.4. This means that g2 = 0.4 and this makes g = 0.63 (rounded off). Therefore 63 percent of the alleles for this trait are for yellow and 37 percent of the alleles in the population are for green. Since G+g=1 we know that 1.0-0.63=0.37 which is G. So 40 percent of the population is gg, it's genotype, but the frequency of the g allele is 63 percent' Likewise 60 percent of the population is GG or Gg but the frequency of G is 37 percent. There is a secondary equation that allows the calculation of percentages of GG and Gg as well with GG at 13.7% of the population and Gg at approximately 46.6% of the population. gg would be at 39.7%


Which is an example of genetic drift?

Allele frequencies change randomly each generation. APEX

Related questions

What is the allele frequency?

The distribution of alleles in a population - APEX


What is an allelotype?

An allelotype is a frequency distribution of a set of alleles in a population.


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The theory of modern synthesis states that evolution involves changes in a population's?

population


What happens to a populations alleles as they change one time?

Evolution is the change in the frequency of alleles of a population of organisms over time.


What hsa to change from generation to generation in an evolving population?

The frequency of the populations alleles. Their gene frequency must change to have evolution.


What could cause a large shift in the frequency of alleles in a population?

Most of the population is wiped out by a volcano and then repopulates the area.


What indicates that evolution is occurring in a population in genetic terms?

In terms of a population, evolution is just the change of allele frequencies over time. Natural selection can cause certain advantageous alleles to increase in frequency, and detrimental alleles to decrease in frequency.


In a hardy-weinberg population with two alleles A and a that are in equilibrium the frequency of allele a is 0.1 what is the percentage of the population that is heterozygous for this alle?

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What is evolution genetic terms?

Any change over time in the relative frequency of alleles in a population.


In a population the sum of the relative frequencies of all alleles for a particular trait is?

Gene or allele frequency


What does the founder effect refer to?

Genetic drift. It is when a representative sample of emigrant alleles that break off from a larger population and travel to a new location do not represent a complete frequency of the parent populations alleles. They then vary from a little to greatly from the parent population. Deleterious recessive alleles can be expressed in this founder population in greater frequency sometimes. Look up the ' Quebec effect.