29. A small, reproductively isolated religious sect called the Dunkers was estab
ID: 83091 • Letter: 2
Question
29. A small, reproductively isolated religious sect called the Dunkers was established by 27 families that came to the United States from Germany 200 years ago. The frequencies for blood group alleles in this population differ significantly from those in the general U.S. population. This is an example of a. negative assortive mating b. migration. c. mutation. d. founder effect e. disruptive selection 30 Vestigial structures are: a. structures that occur in fossils but not living animals. b. structures that are essential for successful reproduction c. structures that were important in the past but appear to have no current function d. structures that appear with the onset of puberty 31. A biological species a. always looks different from other species. b. always has a different chromosome number from that of other species. c. is reproductively isolated from other species d. never occupies the same niche as other species. 32. The offspring of better-adapted individuals are expected to make up a larger proportion of the next generation. The most likely explanation is: a. nonrandom mating b. gene flow. c. natural selection d. genetic drift.Explanation / Answer
29. The answer is disruptive selection where the changes in the genetics of the population where extreme values for a trait are favored over intermediate values due to which the population is divided into two distinct groups.
30. Vestigial organs are examples of which being important during the past does not have any function in the recent times.
31. A biological species are individuals that can breed together but cannot breed with other groups. In other words, it can be described as being reproductively isolated from other species.
32. The most likely would be mutations and natural selection. This due to the next generation offsprings are selected for being better adapted than the previous ones.
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