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4 Written questions

3 Matching questions

  1. in a HW population, the frequency of the a allele is 0.4. what is the frequency of individuals with Aa genotype?
    A. 0.16
    B. 0.20
    C. 0.60
    D. 0.48
    E. cant tell from info provided
  2. in certain native american groups, albinism due to a homozygous recessive condition in the biochemical pathway for melanin is sometimes seen. if the frequency of the allele for this condition is 0.06, which of the following is closest to the frequency of the dominant allele in this population? (assume the population is in HW equilibrium)
    A. 0.04
    B. 0.06
    C. 0.16
    D. 0.36
    E. 0.94
  3. the genotype frequencies for the black hair locus are 25% homozygous dominant BB 71% heterozygous Bb and 4% homozygous recessive bb. this info shows that
    A. the dominant phenotype is less fit
    B. there may be a heterozygote advantage
    C. the recessive allele will disappear in a few generations
    D. the population isnt in HWE
  1. a E
  2. b D
  3. c B

5 Multiple choice questions

  1. A
  2. C
  3. E
  4. B
  5. C

5 True/False questions

  1. which of the following best explains why there are seldom more than five trophic levels in a food chain?
    A. most carnivores function at more than one trophic level
    B. trophic levels above this number contain too many individuals
    C. top carnivores are too few in the number to prey effectively
    D. the ecosystem contains too much biomass
    E. energy is lost from each trophic level


  2. greatest diversity of species
    A. tropical rain forest
    B. taiga
    C. arctic tundra
    D. temperate grassland
    E. desert


  3. which of the following is most often associated with the elaborate courtship rituals conducted by many birds?
    A. species recognition
    B. migration
    C. feeding responses
    D. altruism
    E. kin selection


  4. which of the following is the most likely reason for the observed differences in the frequency of the g allele between 1965 and 1972
    A. emigration of white moths from the population
    B. chance
    C. selection against the gray phenotype
    D. speciation
    E. mutation


  5. which of the following is an example of convergent evolution
    A. similar amino acid sequences of hemoglobin in humans and chimps
    B. similar bones in the forelimbs of horses and bats
    C. similar body shape of dolphins and fish
    D. different beak shapes of galapogas finches
    E. similar plant species on islands and the nearest continent


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