Question

biology please help--gene pools

1. One of the important theoretical concepts in population genetics is that of genetic equilibrium, which the Aarge, randomly mating population, allele frequencies do not change from generation to generation frequencies in a population are to remain unchanged, all of the following teria must be met the population must be Irge, there must be no mutation or gone flow, masing must be randon, and there must be no natural selection El Is a consequence of swarty of these conditions over being in populos. For each of the five factor (-) below, describe how and why each would affect the frequency in a gene podl. Use the diagrams to help you (a) Population size: Factors voring gene pool Factors favoring gene stability (no evolution pool change evolution DOORN . (b) Mato selection OOOOOOO OOOO Large population Small population (c) Gene flow Random mating Assortative mating -- Barrior to gone non - (d) Mutation: Emigration No gene flow Gene flow (6) Natural selection: No mutation Mutations 2. Identity a factor that tends to: (a) Increase gonetic variation in populations: (b) Decrease genetic variation in populations: No natural selection Natural selection

Answer 1

A) small population size favour natural selection as no. Of individuals are less and hence some genotypre are more and some genotype are less and hence allelic frequency will never be equal or at equilibrium it will always toward any one side which means that allele is selected by that condition and hence its natural selection

B) Asserive mating promotes natural selection as aseertive mating means choosing like type partner for mating like tall or highted organism mates with highted organism and their progeny will also be highted one so dwarf indivisuals are not getting partner and hence it's no is getting lowered and hence dwarf allele will be less while tall allele will be more.

C) Gene flow is through migration or imimigration both leads to either decrease or increase of any specific genotype of individual and hence allele frequency also shift.

D) mutation cause the change in allele frequence as mutation individual leads to better survival in particular environments than its progeny will also come more and hence this positive type of allele frequency will be also more or vice versa.

E) natural selection is that individuals which are nselected by nature due to more fit for survival in that particular condition.

2) identify the factors which increase genetic frequency are- a) assertive mating, competition, migration

Factors which decrease genetic variation- random mating, no mutation, no natural selection

Hope it's clear..thanks