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BIO 322 PATHO FINAL EXAM NEWEST 2025 ACTUAL
EXAM COMPLETE 100 QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+||BRAND NEW!!
If genetic drift is principal, or only, evolutionary process
affecting allele frequencies at a gene locus, then which of the
following is true?
A. Large populations maintain more genetic variation than small
ones
B. all of these are true
C. Large populations generate more genetic variation than small
ones
D. Mutations drift toward fixation more slowly in large
populations
E. Substitutions occur at the same rate in populations of all sizes
**FIND A** - ANSWER-D
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Assume that a bird species living in the southwest US shows an
Fst value of 0.1 between southern California and Arizona with a
barrier provided by the Mojave Desert. As climate change
progresses, increased desertification of the environment reduces
the rate of migration between CA and AZ as interbreeding
declines:
A. Cannot be determined from the info given
B. FST will be unchanged after several generations
C. Fst will increase towards 1 after several generations
D. Fst values are irrelevant to issues of migration
E. Fst will decline towards 0 after several generations -
ANSWER-C
Which of the following is nota hypothesized advantage of sexual
reproduction?
A. It reduces the chances of producing defective offspring
B. It increases resistance to parasites
C. It helps remove deleterious genes
D. It recombines different advantageous alleles and separates
E. It creates genetic variation - ANSWER-A
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Which of the following statements is true?
A. Random mating in large populations will cause random
fluctuations in the rate of heterozygosity lost in populations
B. Genetic drift varies in direct proportion to populations size
C. Positive assortative mating has the same effects on genetic
diversity in populations as does frequency dependent selection
and heterosis
D. Migration increases genetic variation between populations
and has no effect on genetic diversity within populations
E. Inbreeding is similar to genetic drift in that both process lead
to a predictable rate of loss heterozygosity in populations -
ANSWER-B
Which trait is most likely a product of sexual selection by
female choice?
A. Barbs on the penis remove the sperm of rival males and
increase probability of fertilization
B. Bright coloration on a fish that is indicative of genetic quality
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C. Satellite male behavior by horseshoe crabs, in which an
unmated male piggybacks onto a mating pair in the hopes of
fertilizing at least a few eggs
D. Stronger antlers on an elk that improves an individual's
chances in combat
E. Successful bedbugs with the ability to overcome the female's
resistance to mating - ANSWER-B
Consider a hypothetical locus with several segregating alleles.
The populations size is small, mutation is absent, and none of
the alleles has a selective advantage. Which of the following is
likely to occur after a long period of time (many generations)?
A. Allele frequencies will change over time, but all alleles will
remain
B. Genetic variation will decline as alleles randomly go extinct
C. Allele frequencies will cycle over time
D. Balancing selection will maintain all the alleles
E. Allele frequencies will remain constant - ANSWER-B
The effective population size, Ne , represents an idealized,
hermaphrodite, randomly mating population that
BIO 322 PATHO FINAL EXAM NEWEST 2025 ACTUAL
EXAM COMPLETE 100 QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+||BRAND NEW!!
If genetic drift is principal, or only, evolutionary process
affecting allele frequencies at a gene locus, then which of the
following is true?
A. Large populations maintain more genetic variation than small
ones
B. all of these are true
C. Large populations generate more genetic variation than small
ones
D. Mutations drift toward fixation more slowly in large
populations
E. Substitutions occur at the same rate in populations of all sizes
**FIND A** - ANSWER-D
,2|Page
Assume that a bird species living in the southwest US shows an
Fst value of 0.1 between southern California and Arizona with a
barrier provided by the Mojave Desert. As climate change
progresses, increased desertification of the environment reduces
the rate of migration between CA and AZ as interbreeding
declines:
A. Cannot be determined from the info given
B. FST will be unchanged after several generations
C. Fst will increase towards 1 after several generations
D. Fst values are irrelevant to issues of migration
E. Fst will decline towards 0 after several generations -
ANSWER-C
Which of the following is nota hypothesized advantage of sexual
reproduction?
A. It reduces the chances of producing defective offspring
B. It increases resistance to parasites
C. It helps remove deleterious genes
D. It recombines different advantageous alleles and separates
E. It creates genetic variation - ANSWER-A
,3|Page
Which of the following statements is true?
A. Random mating in large populations will cause random
fluctuations in the rate of heterozygosity lost in populations
B. Genetic drift varies in direct proportion to populations size
C. Positive assortative mating has the same effects on genetic
diversity in populations as does frequency dependent selection
and heterosis
D. Migration increases genetic variation between populations
and has no effect on genetic diversity within populations
E. Inbreeding is similar to genetic drift in that both process lead
to a predictable rate of loss heterozygosity in populations -
ANSWER-B
Which trait is most likely a product of sexual selection by
female choice?
A. Barbs on the penis remove the sperm of rival males and
increase probability of fertilization
B. Bright coloration on a fish that is indicative of genetic quality
, 4|Page
C. Satellite male behavior by horseshoe crabs, in which an
unmated male piggybacks onto a mating pair in the hopes of
fertilizing at least a few eggs
D. Stronger antlers on an elk that improves an individual's
chances in combat
E. Successful bedbugs with the ability to overcome the female's
resistance to mating - ANSWER-B
Consider a hypothetical locus with several segregating alleles.
The populations size is small, mutation is absent, and none of
the alleles has a selective advantage. Which of the following is
likely to occur after a long period of time (many generations)?
A. Allele frequencies will change over time, but all alleles will
remain
B. Genetic variation will decline as alleles randomly go extinct
C. Allele frequencies will cycle over time
D. Balancing selection will maintain all the alleles
E. Allele frequencies will remain constant - ANSWER-B
The effective population size, Ne , represents an idealized,
hermaphrodite, randomly mating population that
