Will rate when all questions are answered, thank you. Q6.2. Whlich of the follow

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Will rate when all questions are answered, thank you.

Q6.2. Whlich of the following statements about genetic drift and population slze is FALSE? Even the largest populations in the world experience random genetic drift. The larger a sample is, the more likely it is similar to its source population. A population is unlikely to lose genetic diversity when its size is drastically reduced. The effects of genetic drift are more pronounced in very small populations. Submit Q6.3. What offect does inbreeding have on a population? Inbreeding tends to decrease the effects of sampling error in a population. Inbreeding tends to increase the census population size. Inbreeding tends to increase the proportion of homozygous individuals in a population. Inbreeding tends to decrease a population's susceptibility to disease. Subrmit Q6.4. What is the effective size of a population? The size of an idealized, randomly mating population that has the same heterozygosity as the actual population The size of a population with the same heterozygosity as the actual population, but which does not lose heterozygosity over time The size of an idealized, randomly mating population losing homozygosity at the same rate as the actual The size of an idealized, randomly mating population losing heterozygosity at the same rate as the actual Submit Q6.5. Which of the following is most likely to increase the effectlve size of a population? Increasing the census population size and making the sex ratio more balanced Decreasing the census population size and making mating less random (i.e., more local) Decreasing the census population size and making the sex ratio more balanced Making the sex ratio less balanced and making mating more random (i.e., less local) Submit Q6.6. If gametes from a gene pool combine randomly to make only a small number of zygotes, the allele frequencies among the zygotes may be quite different than they are in the gene pool. Why? The effects of natural selection are more pronounced in small populations. Changes in allele frequencies over many generations are inevitable with sexual reproduction. Alleles combine more randomly with a small number of zygotes. The effects of sampling error are more pronounced with smaller samples. Submit Q6.7. How is genetic drift different from natural selection? Natural selection occurs because some alleles confer higher fitness, whereas genetic drift occurs because of sampling error. Natural selection has a stronger effect in large populations, whereas genetic drift acts primarily in small Natural selection is a mechanism of evolution, whereas genetic drift is not a mechanism but an outcome of Natural selection tends to cause very rapid evolution, whereas genetic drift tends to operate on much longer time scales. Q6.8. Imagine a population evolving by genetic drift in which the frequency of allele K is 0.9. What is the probability that at some point in the future allele K will drift to a frequency of 1.0? (Hint: Express your answer as a number between 0 and 1.) Submit

Explanation / Answer

6.2 -> The larger the sample size the more likely it is similar to the source population.

6.3-> inbreeding increases the proportion of the homozygous individuals in population

6.4 -> The size of an idealized, randomly mating population losing heterozygosity at the same rate as actual population

6.5 -> increasing the population census size and making the sex ratio moore balanced.

6.6 -> the effect of sampling error is more pronounced with small samples.

6.7 -> Natural selection occurs because some alleles confer high fitness whereas genetic drift occurs because of sampling error.

6.8 -> 0.9

6.9 - > the expected frequencies are 0.7 for R and 0.3 for r. the actual frequencies could be different

6.10 -> effective population = ( 4* number of males + number of females)/(total) = 4*90*10/100 = 36

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