The Wizard Who Flew Through Biology

___24. In which macrocosm is the frequence of the allelomorph for chocolate-brown feathers highest? a. A b. B c. C d. D e. E ____25. In which state would it be least likely that an accident would significantly alter the frequency of the brown allelomorph? a. A b. B c. C d. D e. E ____26. The probability of a re spick-and-spanal at a detail ingredient locus is ____, and the probability of a mutation in the genome of a particular individual is ____. a. high first-class honours degree b. low high c. low low d. high high e. moderate moderate ____27.Which factor is the most of the essence(predicate) in producing the variability that occurs in all(prenominal) divisorration of humans? a. mutation b. informal recombination c. genetic bobble d. nonrandom mating e. natural endurance ____28. In a large, internally reproducing population, the frequency of an allelomorph changes from 0. 6 to 0. 2. From this change, unmatchable can most logically assume that, in this environment , a. the allele is neutral. b. the allele mutates readily. c. random processes start changed allelic frequencies. d. there is no sexual pickaxe. e. the allele reduces fitness. ____29.You are maintaining a small population of fruit fly in the laboratory by transferring the travel to a new culture bottleful after each generation. After several generations, you nonice that the viability of the flies has diminish greatly. Recognizing that small population size is likely to be associate to decreased viability, the best way to reverse this trend is to a. cross your flies with flies from a nonher lab. b. reduce the number of flies that you transfer at each generation. c. transfer only the largest flies. d. change the temperature at which you rear the flies. e. hock the flies with a brief treatment of heat or cold to serve them more hardy. ____30. If the frequency of a particular allele that is present in a small, isolated population of alpine plants should change due to a greasesl ide that leaves an even smaller remnant of surviving plants, then what has occurred? a. a bottleneck b. genetic drift c. microevolution d. A and B only e. A, B, and C ____31. Through time, the movement of people on Earth has steadily increased. This has neutered the course of human evolution by increasing a. nonrandom reproduction. b. geographical isolation. c. enetic drift. d. mutations. e. gene flow. ____32. Gene flow is a concept best use to describe an exchange between a. species. b. manlikes and females. c. populations. d. individuals. e. chromosomes. Use the information below to response the following questions. In the year 2500, atomic number 23 male space colonists and five female space colonists (all unrelated to each other) settle on an depopulated Earthlike planet in the Andromeda galaxy. The colonists and their offspring randomly companion for generations. All ten of the original colonists had free earlobes, and two were heterozygous for that trait.The allele for free earlobes is dominant to the allele for attached earlobes. ____33. If four of the original colonists died originally they produced offspring, the ratios of genotypes could be quite different in the subsequent generations. This is an example of a. diploidy. b. gene flow. c. genetic drift. d. disruptive extract. e. stabilizing pickaxe. ____34. The higher the proportion of loci that are stiff in a population, the lower is that populations a. nucleotide variability. b. genetic polymorphism. c. average heterozygosity. d. A, B, and C e. A and B onlyChoose among these options to answer the following questions. apiece option may be used once, more than once, or not at all. A. random weft B. directional plectron C. stabilizing selection D. disruptive selection E. sexual selection ____35. A certain species of land snail exists as either a cream color or a solid brown color. Intermediate individuals are relatively rare. a. A b. B c. C d. D e. E ____36. Pathogenic bacteria arrange i n many hospitals are antibiotic resistant. a. A b. B c. C d. D e. E ____37. Heterozygote advantage should be most closely linked to which of the following? . sexual selection b. stabilizing selection c. random selection d. directional selection e. disruptive selection In a in truth large population, a quantitative trait has the following distribution variant ____38. If the curve shifts to the left or to the right, there is no gene flow, and the population size consequently increases over successive generations, then which of these is (are) probably occurring? 1. in-migration or emigration 2. directional selection 3. adaptation 4. genetic drift 5. disruptive selection a. 1 only b. 4 only c. 2 and 3 d. 4 and 5 e. 1, 2, and 3 ____39.Male satin bowerbirds adorn structures that they build, called bowers, with repeat feathers, flowers, and other bizarre ornaments in order to attract females. Females inspect the bowers and, if fittingly impressed, allow males to mate with them, after wh ich they go off to nest by themselves. The evolution of this behavior is best described as due to a. excerption of the fittest. b. artificial selection. c. sexual selection. d. natural selection. e. disruptive selection. ____40. In many tool species, mature males are much larger than mature females. This size deflection can be attributed to a. ale hormones having a more positive effect on body size than female hormones do. b. the operation of intrasexual selection. c. females preferentially selecting larger males as mates. d. A and B only e. A, B, and C ____41. Adult male vervet monkey monkeys have red penises and blue scrotums. Males use their colorful genitalia in dominance displays wherein they compete with each other for access to females. The coloration of the male genitalia is best explained as the result of ____, and specifically of ____. a. natural selection stabilizing selection b. disruptive selection intrasexual selection . sexual selection intrasexual selection d. na tural selection intersexual selection e. sexual selection disruptive selection ____42. When imbalances occur in the sex ratio of sexual species that have two sexes (i. e. , other than a 5050 ratio), the members of the minority sex often receive a greater proportion of carry on and resources from parents than do the offspring of the majority sex. This is most clearly an example of a. sexual selection. b. disruptive selection. c. balancing selection. d. stabilizing selection. e. frequency-dependent selection. ____43.Which of the following statements about species, as be by the biological species concept, is (are) subdue? I. Biological species are defined by reproductive isolation. II. Biological species are the model used for grouping nonextant forms of life. common chord. The biological species is the largest unit of population in which successful reproduction is possible. a. I only b. II only c. I and III d. II and III e. I, II, and III ____44. Which of the following is not co nsidered an intrinsic isolating mechanism? a. sterile offspring b. ecological isolation c. geographic isolation . gametic incompatibility e. time of courtship display ____45. Dog breeders maintain the purity of breeds by keeping dogs of different breeds apart when they are fertile. This kind of isolation is most analogous to which of the following reproductive isolating mechanisms? a. reduced crossbred fertility b. mark breakdown c. mechanical isolation d. habitat isolation e. gametic isolation ____46. deuce species of frogs belonging to the same genus occasionally mate, but the offspring do not complete development. What is the mechanism for keeping the two frog species separate? a. he postzygotic barrier called hybrid inviability b. the postzygotic barrier called hybrid breakdown c. the prezygotic barrier called hybrid sterility d. gametic isolation e. adaptation ____47. A defining characteristic of allopatric speciation is a. the appearance of new species in the midst of old ones. b. asexually reproducing populations. c. geographic isolation. d. artificial selection. e. large populations. ____48. According to the concept of punctuated equilibrium, the sudden appearance of a new species in the fossil record means that a. the species is now extinct. b. peciation occurred instantaneously. c. speciation occurred in one generation. d. speciation occurred rapidly in geologic time. e. the species will consequently have a relatively short existence, compared with other species. ____49. Which of the following would be a position held by an adherent of the punctuated equilibrium theory? a. A new species forms most of its unique features as it comes into existence and then changes little for the eon of its existence. b. One should expect to find many transitional fossils left by organisms in the process of forming new species. . Given enough time, most be species will gradually evolve into new species. d. Natural selection is nugatory as a mechanism of evoluti on. e. Most speciation is anagenetic. ____50. Which of the following statements about speciation is correct? a. The goal of natural selection is speciation. b. When reunited, two allopatric populations will not interbreed. c. Natural selection chooses the reproductive barriers for populations. d. Prezygotic reproductive barriers usually evolve before postzygotic barriers. e. Speciation is included within the concept of macroevolution.