The Wizard Who Flew Through Biology

___24. In which population is the frequency of the allele for cook feathers highschoolest? a. A b. B c. C d. D e. E ____25. In which population would it be least likely that an accident would signifi locoweedtly alter the frequency of the brown allele? a. A b. B c. C d. D e. E ____26. The hazard of a mutation at a particular broker locale is ____, and the probability of a mutation in the genome of a particular soul is ____. a. high low b. low high c. low low d. high high e. moderate moderate ____27.Which factor is the roughly important in producing the variability that occurs in each generation of humans? a. mutation b. knowledgeable recombination c. genetic drift d. non ergodic mating e. natural plectron ____28. In a volumed, hinge uponually reproducing population, the frequency of an allele changes from 0. 6 to 0. 2. From this change, cardinal empennage most logically assume that, in this environment, a. the allele is neutral. b. the allele mutates readily. c. random p rocesses flip changed allelic frequencies. d. there is no sexual selection. e. the allele reduces fitness. ____29.You are maintaining a pocket- size population of fruit flies in the laboratory by shippingring the flies to a refreshful culture bottle after each generation. After several generations, you notice that the viability of the flies has decreased greatly. Recognizing that small population size is likely to be linked to decreased viability, the beaver way to reverse this trend is to a. cross your flies with flies from some another(prenominal) lab. b. reduce the number of flies that you transfer at each generation. c. transfer totally 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 make them more than 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 landslide that leaves an even smaller r emnant of surviving plants, then what has occurred? a. a coarctation b. genetic drift c. micro ontogenesis d. A and B only e. A, B, and C ____31. by dint of time, the movement of people on Earth has steadily increased. This has altered the cast of human evolution by increasing a. nonrandom reproduction. b. geographic isolation. c. enetic drift. d. mutations. e. gene flow. ____32. Gene flow is a concept best used to soak up an exchange between a. species. b. males and pistillates. c. populations. d. individuals. e. chromosomes. Use the information below to answer the future(a) questions. In the year 2500, five male space colonists and five female space colonists (all unrelated to each other) settle on an uninhabited earthlike planet in the Andromeda galaxy. The colonists and their consequence randomly mate for generations. altogether ten of the original colonists had indigent earlobes, and two were heterozygous for that trait.The allele for free earlobes is dominant to the a llele for attached earlobes. ____33. If four of the original colonists died before they produced offspring, the ratios of genotypes could be quite distinct in the subsequent generations. This is an example of a. diploidy. b. gene flow. c. genetic drift. d. troubled selection. e. alter selection. ____34. The higher the proportion of loci that are fixed 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 resources to answer the side by side(p) questions. Each option may be used once, more than once, or not at all. A. random selection B. directing selection C. stabilizing selection D. profligate selection E. sexual selection ____35. A certain species of land gather 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 found in many hospitals are antibiotic re sistant. a. A b. B c. C d. D e. E ____37. Heterozygote advantage should be most closely linked to which of the interest? . sexual selection b. stabilizing selection c. random selection d. directional selection e. roiling selection In a very large population, a quantitative trait has the following distribution pattern ____38. If the ignore 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. immigration 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 parrot feathers, flowers, and other bizarre ornaments in order to attract females. Females inspect the bowers and, if suitably impressed, leave alone males to mate with them, after which they go off to nest by themselv es. The evolution of this behavior is best described as due to a. survival of the fittest. b. bionic selection. c. sexual selection. d. natural selection. e. disruptive selection. ____40. In many animal species, get on males are much larger than mature females. This size difference 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 monkeys flip red penises and blue scrotums. Males use their colorful privates in dictum 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. natural 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 care 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 defined by the biological species concept, is (are) correct? I. Biological species are defined by reproductive isolation. II. Biological species are the model used for grouping extinct forms of life. three. 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 considered an intrinsic isolating mechanism? a. sterile offsp ring b. ecological isolation c. geographic isolation . gametic incompatibility e. timing of courting 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 similar to which of the following reproductive isolating mechanisms? a. reduced hybrid fertility b. hybrid crack-up c. mechanical isolation d. habitat isolation e. gametic isolation ____46. Two species of frogs be to the same genus occasionally mate, but the offspring do not tell apart development. What is the mechanism for keeping the two frog species separate? a. he postzygotic hindrance called hybrid inviability b. the postzygotic barrier called hybrid breakdown c. the prezygotic barrier called hybrid infertility d. gametic isolation e. adaptation ____47. A defining characteristic of allopatric speciation is a. the display of new species in the midst of old ones. b. asexually reproducing populations. c. geographic isolatio n. d. simulated 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 patch 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 duration of its existence. b. ane should expect to find many transitional fossils left by organisms in the process of forming new species. . Given enough time, most existing species will gradually evolve into new species. d. rude(a) selection is unimportant as a mechanism of evolution. e. Most speciation is anagenetic. ____50. Which of t he 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 include within the concept of macroevolution.