Bio Ch 13 Test Review Part 2/2

Quiz
•
Biology
•
9th - 12th Grade
•
Medium
Drew Bradley
Used 196+ times
FREE Resource
24 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Large antlers in male elk, which are used for battles between males, are a good example of a trait favored by
intersexual selection
directional selection
disruptive selection
intrasexual selection
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The ultimate source of all new alleles is
mutation.
genetic drift.
chromosomal duplication.
natural selection.
3.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Which term represents the frequency of heterozygotes in a population that is in Hardy-Weinberg equilibrium?
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Imagine that you are studying a very large population of moths that is isolated from gene flow. A single gene controls wing color. Half of the moths have white-spotted wings (genotype WW or Ww), and half of the moths have plain brown wings (ww). There are no new mutations, individuals mate randomly, and there is no natural selection on wing color. How will p, the frequency of the dominant allele, change over time?
p will neither increase nor decrease; it will remain more or less constant under the conditions described.
p will decrease because of genetic drift.
p will fluctuate rapidly and randomly because of genetic drift.
p will increase; the dominant allele will eventually take over and become most common in the population.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Microevolution, or evolution at its smallest scale, occurs when
a new species arises from an existing species.
a population's allele frequencies change over a span of generations.
an individual's traits change in response to environmental factors.
a community of organisms changes due to the extinction of several dominant species.
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
The allele for cystic fibrosis is recessive. For this gene among Caucasians, p = 0.98. If a Caucasian population is in Hardy-Weinberg equilibrium with respect to this gene, what proportion of babies is born homozygous recessive and therefore suffers cystic fibrosis?
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Genetic drift resulting from a disaster that drastically reduces population size is called ___.
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