Quiz 15
Ch 15
Name________________________
Remote # ____________
1. Selection against individuals at both
a. kin selection
ends of a phenotypic distribution for a
b. sexual selection
character, favoring those in the middle
c. natural selection
or average of the distribution, is an
d. directional selection
example of __________.
e. disruptive selection
a. kin selection
b. sexual selection
4. What is a gene pool?
c. directional selection
a. a region of DNA found at a specific
d. disruptive selection
position on a chromosome
e. stabilizing selection
b. the number of copies of an allele for a
specific gene in a population
2. The process by which two species
c. the total number of all the genes in a
evolve adaptations in response to one
population
another, such that evolutionary change
d. none of the above
in one species produces an evolutionary
change in the other is called _______.
5. What is the Hardy-Weinberg
a. coevolution
principle?
b. natural selection
a. a model of population genetics that
c. directional selection
shows that evolution will occur if all of the
d. balanced polymorphism
conditions of the principle are met
b. a model of population genetics that
3. Which of the following selective
shows that evolution will occur if even one
processes did Darwin suggest to explain
of the conditions of the principle is violated
the evolution of the conspicuous
c. a model of population genetics that
structures and courtship behaviors that
describes how evolution occurs in nature
d. Both the first and third answers are
male animals use to attract a mate?
correct.
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6. Which phrase best describes the
from each other
concept of natural selection?
d. makes populations more
genetically similar
a. survival of the fittest
b. reproductive success
10. When populations get very small,
c. long life
the danger of losing genetic variability is
d. Both the first and third answers
high. This is called a ________________.
are correct.
a. endangerment
7. What type of natural selection favors
b. population bottleneck
individuals with rarely encountered traits
c. population whiplash
over individuals with traits that are
d. DNA reduction
frequently encountered?
11. Chance effects can change an
a. disruptive selection
allele’s frequency in a population. This
b. stabilizing selection
phenomenon is called _______________.
c. directional selection
8. Evolution is best defined as a change
a. DNA replication
in __________.
b. chance
c. genetic bottleneck
a. number of species
d. genetic drift
b. physical traits
c. DNA sequence
12. ____________________ selection is a
d. allele frequencies
type of selection that favors individuals
with average values of traits.
9. Gene flow __________.
a. cannot influence the evolution
a. Natural
of a population
b. Random
b. prevents the spread of alleles
c. Stabilizing
through a species
d. Specific
c. causes populations to diverge
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