3) Movement of alleles between populations is called _____ and results in _____. a.genetic equilibrium; decreased genetic differences between populations b.genetic drift; increased genetic differences between the populations c.gene flow; increased genetic differences between the populations d.genetic drift; decreased genetic differences between the populations e.gene flow; decreased genetic differences between the populations

3) Movement of alleles between populations is called _ and results in _. a.genetic equilibrium; decreased genetic differences between populations b.genetic drift; increased genetic differences between the populations c.gene flow; increased genetic differences between the populations d.genetic drift; decreased genetic differences between the populations e.gene flow; decreased genetic differences between the populations

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter19: Evolutionary Change In Populations

Section: Chapter Questions

Problem 4TYU: If a populations allele and genotype frequencies remain constant from generation to generation, (a)...

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If a populations allele and genotype frequencies remain constant from generation to generation, (a) the population is undergoing evolutionary change (b) the population is said to be at genetic equilibrium (c) microevolution has taken place (d) directional selection is occurring, but only for a few generations (e) genetic drift is a significant evolutionary force
Genetic drift is most likely to affect:a. every population, regardless of sizeb. small populationsc. large populationsd. large and diverse communities
A. When genetic drift and natural selection are combined what happens to the deleterious allele. B. What changes would be caused by population size increase
a. What effect does combining genetic drift and natural selection have on beneficial mutations? b. How would you it change if population size increases
In the universal ABO blood grouping system, there are four phenotypes—A, B, AB, and O—which are determined by three different alleles. The presence of three alleles in the ABO blood grouping system is an example of ____. a. a polymorphism b. the bottleneck effect c. genetic drift d. a dimorphism e. the founder effect
I. A population called the founder generation, consisting of 2000 AA individuals, 2000 Aa individuals, and 6000 aa individuals is established on a remote island. Mating within this population occurs at random, the three genotypes are selectively neutral, and mutations occur at a negligible rate. *help needed for sub questions d-f. a. What are the frequencies of alleles A and a in thefounder generation?b. Is the founder generation at Hardy-Weinbergequilibrium?c. What is the frequency of the A allele in the secondgeneration (that is, the generation subsequent to thefounder generation)?d. What are the frequencies for the AA, Aa, and aagenotypes in the second generation?e. Is the second generation at Hardy-Weinbergequilibrium?f. What are the frequencies for the AA, Aa, and aagenotypes in the third generation?
Match the evolution concepts. ___ gene flow a. outcome can be interdependence ___ sexual b. changes in a population’s allele selection frequencies due to chance alone ___ extinct c. alleles enter or leave a population ___ genetic d. adaptive traits make their drift bearers better at securing mates ___ coevolution e. no more living members ___ adaptive f. burst of divergences from one radiation lineage into many
The genetic description of an individual is its genotype, whereas the genetic description of a population is its (a) phenotype (b) gene pool (c) genetic drift (d) founder effect (e) changes in allele frequencies
1. Based on the class data from Experiment I, for each of the three populations, describethe effect of population size on genetic diversity over time. Your answer should touchon the magnitude of any genetic changes through time for each of the three populationsizes.
1A) When you have extreme inbreeding (i.e. same genotypes mate to give rise to the next generation), the percent of heterozygotes will decrease by ________ % a generation, whereas the percent of AA homozygotes will increase ________ % each generation and the percent of aa homozygotes will increase ________ % each generation . 60, 40, 0 none 50, 25, 25 50, 10, 40 25, 50, 25 1B) What is the one measurement we have to make if we want to know the percentage of particular genotypes within an actual population, assuming complete dominance and two alleles? the frequency of dominant phenotypes the frequency of heterozygous genotypes the frequency of recessive phenotypes all of the options are correct the frequency of heterozygous phenotypes
4) Which of the following does not alter allele frequencies? a.Inbreeding b.Gene flow c.Genetic drift d.The bottleneck effect e.Natural selection
I. A population called the founder generation, consisting of 2000 AA individuals, 2000 Aa individuals, and6000 aa individuals is established on a remote island.Mating within this population occurs at random, thethree genotypes are selectively neutral, and mutationsoccur at a negligible rate.a. What are the frequencies of alleles A and a in thefounder generation?b. Is the founder generation at Hardy-Weinbergequilibrium?c. What is the frequency of the A allele in the secondgeneration (that is, the generation subsequent to thefounder generation)?d. What are the frequencies for the AA, Aa, and aagenotypes in the second generation?e. Is the second generation at Hardy-Weinbergequilibrium?f. What are the frequencies for the AA, Aa, and aagenotypes in the third generation?