38. Queen Victoria\'s son Leopold had hemophilia, which is caused by a sex-linke

Question

38. Queen Victoria's son Leopold had hemophilia, which is caused by a sex-linked

            recessive gene (Xh). Leopold lived to be 31 years old and fathered a normal daughter.

            What is the genotype of his daughter?

            A) XHXH    B) XHXh     C) XhXh     D) XHY

39. Microevolution by genetic drift is more likely in  

            A) large populations     B) small populations

40. New alleles appear in a species by    A) genetic drift       B) mutation

            C) gene flow D) natural selection

41. Speciation is most likely when a huge continental population of a snail species

            A) undergoes genetic drift     B) is forced north by global warming

            C) is divided in two over the eons by the rise of a mountain range    

42. The insect wing, bat wing, and bird wing are

            A) analogous structures         B) homologous structures

43. Groups of organisms that interbreed in nature and are reproductively isolated from

other such groups defines   A) communities    B) hybrids

   C) families   D) species

44. Certain species of ants protect, and receive food from, certain species of acacia trees

            in the tropics.   This exemplifies   A) predation   B) mutualism   C) competition

45. The most important cause of species extinction due to humans in recent centuries is

            A) disease      B) global warming    C) genetic engineering     D) habitat loss

46. Logistic population growth will level off at a number of organisms that are

            A) ten times the number in the original population    B) the exponential line

           C) equal to the number of niches   D) the carrying capacity K of the environment     

47. If the decomposers were removed from an ecosystem, the other organisms would

            eventually die because A) green plants would run out of necessary minerals in the

            soil   B) green plants would lose their energy source     C) herbivores must eat

            decomposers     D) decomposers release oxygen needed by the other organisms

48. The source of energy for an ecosystem is   A) nutrients in the soil   B) water

            C) sunlight   D) recycled energy from decomposers

49. Fungi are primarily    A) producers   B) herbivores   C) carnivores   D) decomposers

50. If deer are placed on an island with a constant, renewable food supply and a stable biological  

       community with predators, the growth curve after several decades would be described as a

            A) J-curve [exponential]     B) S-curve [logistic]

MULTIPLE CHOICE QUESTIONS

Explanation / Answer

38. B) XHXh

39.  B) small populations

40. B) Mutation

41. C) is divided in two over the eons by the rise of a mountain range   

42. A) Analogous Structures

43. D) Species

44. B) mutualism

45. D) habitat loss

46. D) the carrying capacity K of the environment

47. A) green plants would run out of necessary minerals in the soil

48. D) recycled energy from decomposers

49. D) decomposers

50.  B) S-curve [logistic]

51. C) fat molecules contain a lower percentage of oxygen atoms

52. D) A, B, AB or O

53. B) 1/2 colorblind, 1/2 normal

54. No given figure

55. No given figure

56. D) CGUGCACUU

57.  A) Leucine-Asparagine-Alanine

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