Please help me answer these evolution questions! Thank you for any help! 43. Gen

Question

Please help me answer these evolution questions! Thank you for any help!

43. Genomic imprinting by males can coerce females into preferentially investing resources in the male's offspring. This is most often observed in all of the following groups, except a. Monogamous mammals b. Placental mammals C. Polyandrous mammals d. Promiscuous mating mammals 44. According to the Chase-Away Sexual Selection hypothesis: a. b. c. d. The gender that is competitive will actively chase members of the choosy gender The gender that is choosy will actively chase members of the competitive gender Male selection on female traits results in extreme phenotypic values Male and female adaptations are sexually antagonistic 45. According to Lynch (2010), the fundamental requirement for the maintenance of a species genetic integrity and long-term viability is that the loss of mean fitness by the recurrent input of deleterious mutations each generation must be balanced by the removal of such mutations by a. Genetic drift b. Natural selection c. Reciprocal altruism d. Recurrent mutation 46. According to Lynch (2010), humans face all of the following evolutionary challenges associated with mutation except: a. Early onset of maturity b. Long life c. High mutation rate d. Gene structure 47. According to Lynch (2010), why do multicellular species have more substitution mutatio generation than unicellular species? a. Multicellular species have smaller effective populations sizes b. Genetic drift is acts stronger on unicellular species C. Multicellular species outnumber unicellular species d. Crossing over rate for unicellular species is higher 48. According to Lynch, humans, especially in developed countries, have higher deleterious allele a. Mutation rates are lower in developed countries b. Random mating has increased the power of natural selection c. Selection coefficients have been reduced d. The effect of genetic drift has been reduced frequencies in mutation-selection balance because:

Explanation / Answer

43(b) Placental mammals

44(d) male and female adapations are sexually antagonistic

45(a) genetic drift

46(b) long life

47(a) muticellular species have smaller effective population sizes

48(b) random mating has increased the power of natural selection

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