Give one example of how allele frequencies change from one generation to the next due to mutation, migration, genetic drift, nonrandom mating, and selection. Give one example of how allele frequencies change from one generation to the next due to mutation, migration, genetic drift, nonrandom mating, and selection. Solution Answers: Change of allele frequencies due to the said factors have been discussed below: Mutation: Mutations introduces new alleles into a population and can affect allele the allele frequency in the population. Migration: The movement of new individuals into or out of a population results in a change in allele frequency. Immigration results in addition of new alleles to a population while the reverse results in a loss. Genetic drift: It occurs due to a change in allele frequencies in a population by chance. Genetic drift is a random process and result in large changes in population within a short interval. Non random mating: Unless accompanied by selection, non random mating change the genotypic frequencies but not the allele frequencies in a population. The most important form of non random mating is inbreeding. Selection: Selection occurs when genotypes have different reproductive successes. It acts as a positive filter and removes alleles which has negative influence on a population while selects those which have positive or neutral effects..

1. Given that tan = 7 in quadrant IV, nd sin 2, cos 2, and tan 2.
Solution
tan = 7
==> tan = 7/1
opposite side = 7 and adjacent side = 1
hypotenuse = [(-7)2 + 12] = 50
as it is in IV quadrant sine function is negative
==> hypotenuse = 52
sin 2 = 2 sin cos
==> sin 2 = 2 (-7/(52)) (1/ (52)) = -7/25
==> sin 2 = -7/25
cos 2 = cos2 - sin2
==> cos 2 =(1/ (52))2 - ( -7/(52))2 = -6/50 = -3/25
==> cos 2 = -3/25
tan 2 = sin 2 / cos 2
==> tan 2 = (-7/25)/(-3/25)
==> tan 2 = 7/3
Hence sin 2 = -7/25 , cos 2 = -3/25 , tan 2 = 7/3