BIO 1108 EXAM QUESTIONS AND
ANSWERS A+ GRADED
A population of field crickets in Pennsylvania have heritable phenotypic variation
for a fast and slow chirp song. The frequency of alleles for both chirp types is 0.5.
If hurricane Ida hit this population of field crickets and reduced the population by
80% which of the following is most likely over the next 2 generations?
A. the population will be under Hardy-Weinberg equilibrium
B. the population will evolve because new mutations have been added the
population
C. the population will evolve because genetic drift will favor one chirp type over
another
D. the population may evolve because a population bottleneck will cause chance
fluctuations in allele frequencies
E. the population will evolve because directional selection will favor one chirp
type over the other
D. the population may evolve because a population bottleneck will cause chance
fluctuations in allele frequencies
In a large population of humans, which of the following is most likely to lead to
heritable trait variation from one generation to the next?
A. mutation
B. genetic drift
C. meiosis
D. all of these are equally likely to lead to heritable variation from one generation
to the next
C. meiosis
Science is (select all that apply)
- a method used to prove the truth
- experimentation
- a process for gathering evidence
- A rigid process
- a way to test ideas
- A body of knowledge
- a process for gathering evidence
- a way to test ideas
- A body of knowledge
Which of these examples best exhibits one of Darwin's inferences
A. The intensity of red coloration in cardinal feathers has a dietary component
B. A bear produces 3 cubs all of which do not survive
C. Salamanders with broad snouts produce offspring with broad snouts
D. Sooty moths leave more descendants in polluted industrial environments than
light colored moths
ANSWERS A+ GRADED
A population of field crickets in Pennsylvania have heritable phenotypic variation
for a fast and slow chirp song. The frequency of alleles for both chirp types is 0.5.
If hurricane Ida hit this population of field crickets and reduced the population by
80% which of the following is most likely over the next 2 generations?
A. the population will be under Hardy-Weinberg equilibrium
B. the population will evolve because new mutations have been added the
population
C. the population will evolve because genetic drift will favor one chirp type over
another
D. the population may evolve because a population bottleneck will cause chance
fluctuations in allele frequencies
E. the population will evolve because directional selection will favor one chirp
type over the other
D. the population may evolve because a population bottleneck will cause chance
fluctuations in allele frequencies
In a large population of humans, which of the following is most likely to lead to
heritable trait variation from one generation to the next?
A. mutation
B. genetic drift
C. meiosis
D. all of these are equally likely to lead to heritable variation from one generation
to the next
C. meiosis
Science is (select all that apply)
- a method used to prove the truth
- experimentation
- a process for gathering evidence
- A rigid process
- a way to test ideas
- A body of knowledge
- a process for gathering evidence
- a way to test ideas
- A body of knowledge
Which of these examples best exhibits one of Darwin's inferences
A. The intensity of red coloration in cardinal feathers has a dietary component
B. A bear produces 3 cubs all of which do not survive
C. Salamanders with broad snouts produce offspring with broad snouts
D. Sooty moths leave more descendants in polluted industrial environments than
light colored moths
