Exam 23: Population Genetics

The frequency of sickle cell anemia,caused by a homozygous condition (Hb?Hb?)is approximately 0.0016.Assuming the Hardy-Weinberg equilibrium applies,what is the frequency of the Hb? allele?

How does random genetic drift affect large populations?

In a population,whenever the second most frequent allele of a gene has a frequency greater than 0.01,we refer to the situation as a

Which assumption of the Hardy-Weinberg principle is violated by the concept of population subdivision?

At the level of the phenotype,natural selection influences the

The intensity of natural selection is quantified by the

A population's acquisition of selectively neutral alleles through mutation is balanced by the loss of these alleles through genetic drift.At equilibrium,the frequency of heterozygotes involving these alleles is a function of the population's size and the mutation rate is

What causes allele frequencies to change unpredictably in populations because of reproductive uncertainties?

There are 800 individuals in sample group #1 taken from population X that were examined to the codominant trait R.When sampled 30 individuals were homozygous for allele Z (R^KR^K),100 individuals were homozygous for allele K (R^KR^K)and the rest were heterozygous (R^ZR^K)).Determine how many total alleles for the trait in question are present in the sample group,the frequency of allele Z,and the frequency of allele Q,assuming the trait is controlled by a single codominant gene?

The A-B-O blood types are determined by three alleles I^A,I^B,and i.In one population the frequency of individuals who are homozygous for type A blood is 0.063,the frequency of individuals who are homozygous for type B blood is 0.015,and the frequency of individuals are blood type O is 0.44.What is the frequency of individuals who are heterozygous for type A blood?