#Question id: 3390
#Unit 9. Evolution & Diversity of Life Forms
The average numbers of offspring produced by three genotypes are: GG = 60; Gg = 30, gg = 20. What is the selection coefficient of gg?
#Question id: 3391
#Unit 9. Evolution & Diversity of Life Forms
Which of the following statements is an example of genetic drift?
a. Allele g for fat production increases in a small population because birds with more body fat have higher survivorship in a harsh winter.
b. Random mutation increases the frequency of allele A in one population but not in another.
c. Allele R reaches a frequency of 1.0 because individuals with genotype rr are sterile.
d. Allele m is lost when a virus kills all but a few individuals and just by chance none of the survivors possess allele m
#Question id: 3392
#Unit 9. Evolution & Diversity of Life Forms
Color blindness is X linked recessive disorder. X+ chromosome carry a normal allele but Xc chromosome carries defective allele. When frequency of colorblindness female (0.10), colorblind male (0.30) and heterozygous female (0.20). Random matting population, what will be frequency of carrier female?
#Question id: 3393
#Unit 9. Evolution & Diversity of Life Forms
Natural Selection can maintain a polymorphism when
a. heterozygote is fitter than the homozygote
b. Fitnesses of genotypes are negatively frequency dependent.
c. Fitnesses of genotypes are positive frequency dependent.
d. One homozygote is fitter than the heterozygote
#Question id: 3394
#Unit 9. Evolution & Diversity of Life Forms
All genetic drift arises from sampling error. There are several different ways in which sampling error can arise as a following
a. Reduced population size b. Founder effect
c. Genetic bottleneck d. Differ in sex ratio
Which of the following above way cause sampling error in succeed generation?
#Question id: 3395
#Unit 9. Evolution & Diversity of Life Forms
The Hardy-Weinberg principle states that allele frequencies in a population will remain constant over generations if certain assumptions are met.
A. Random mating
B. Sexual selection
C. Migration
D. Large population size
E. Reproductive isolated from other population
F. Linkage of many genes
Which of the above factors will cause changes in allele frequencies overgenerations?