Bio Test 3 (Part 3)
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Bio test part 3 of 5. 55 question test.
- 1.Which of the following evolve?
- A.
Populations
- B.
Genera
- C.
Kingdoms
- D.
Both populations and genera
- E.
Populations, genera, and kingdoms
- 2.The bones in the forelimbs of a mammal
- A.
Can often be traced to a common ancestor.
- B.
Offer no evidence to support the theory of evolution.
- C.
Perform the same function no matter which species they are in.
- D.
May exhibit either analogy or homology but not both when compared to the forelimb of another animal.
- E.
Show convergence with some invertebrate structures.
- 3.The wings of a bird and the wings of a butterfly are ____ and show morphological ____.
- A.
Homologous; convergence
- B.
Analogous; convergence
- C.
Homologous; divergence
- D.
Analogous; divergence
- E.
Homologous; preservation
- 4.The plant species below closely resemble each other but are not closely related. They are native to different continents. What factor explains why they are so much alike?
- A.
Morphological convergence
- B.
Continental drift
- C.
Similar ecological requirements
- D.
Natural selection
- E.
All except continental drift
- 5.The Hardy-Weinberg formula is valuable for the calculation of changes in
- A.
Population size.
- B.
Speciation.
- C.
Allele frequencies.
- D.
Mutation.
- E.
Dimorphism.
- 6.The Hardy-Weinberg rule is
- A.
Useful in determining the extent to which a sexually reproducing population is evolving.
- B.
Used to predict when genetic drift will occur in a sexually reproducing population.
- C.
Useful in determining the extent to which polyploidy is occuring in specific plant populations.
- D.
Used to predict when specific groups of organisms will become extinct.
- E.
All of these
- 7.If the frequency of expression of a recessive trait in a population is 16 percent, the frequency of the recessive allele is what percent?
- A.
16
- B.
25
- C.
40
- D.
50
- E.
67
- 8.Of 400 people who dwell on a Pacific island, 16 are homozygous recessive for a trait that has only two different types of alleles in the population. The number of heterozygous people is
- A.
256.
- B.
32.
- C.
64.
- D.
128.
- E.
384.
- 9.Which graphic in this illustration depicts the results of stabilizing selection?
- A.
A
- B.
B
- C.
C
- D.
B and C
- E.
None of these
- 10.Directional selection occurs when
- A.
The environment controls which organisms will survive.
- B.
Humans determine which organisms will survive.
- C.
The extremes of the population have a lesser chance to survive.
- D.
The extremes of the population have a better chance to survive.
- E.
The organisms on one extreme of the population have a better chance to survive than those on the other extreme.
- 11.In the text example, the change in moth populations from predominantly light- to dark-winged forms was the result of
- A.
Environmental changes.
- B.
Natural selection.
- C.
Food choices by predators.
- D.
The ability of birds to find the prey.
- E.
All of these.
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