The Hardy Weinberg theorem describes a non-evolving population, a gene pool that

Question

The Hardy Weinberg theorem describes a non-evolving population, a gene pool that remains constant over time. For the following population:

In a population with two alleles for a particular locus, A and a, the allele frequency of A is 0.7. Of the 20,000 turtles in the population, approximately 1,800 express the recessive phenotype for this particular gene.

A) Identify whether or not the population is in Hardy-Weinberg equilibrium and calculate the allele and genotypic frequencies in the population’s gene pool.

B) Identify three of the main conditions that must be present in order for a population to be in Hardy-Weinberg equilibrium.

C) Describe three of the main factors that can act to alter gene frequencies and cause microevolution to occur.

Explanation / Answer

A)let p be the frequency of A q for a then p=0.7

if the population is hardy weinberg then, q=1-p(p+q=1) q= 0.3

then q^2= genotypc frequency=0.09

% of people having aa genotype=0.09*100=9%

9% of 20,000=(9/100)*20000=1,800 will be aa in that population if it is in hardy weiburg. it is given in question that 1,800 are recessive

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