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BIOS 280 Exam 1with Complete Solutions 100% Correct
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BIOS 280 Exam 1with Complete Solutions 100% Correct
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BIOS 280 Exam 1with Complete Solutions 100% CorrectWhich of the following would be a useful proxy for fitness?
a. probability of survival to reproductive age
b. number of offspring produced during a specific season
c. probability of survival of offspring
d. all of the above. Correct Ans-d. all of the above.
Some individuals in a population may have maladaptive phenotypes (i.e., phenotypes less
adaptive than other phenotypes present in the population) due to
a. disruptive selection that favors two different phenotypes
b. gene flow from populations in which the phenotype is adaptive
c. genetic drift of neutral traits
d. codon bias Correct Ans-b. gene flow from populations in which the phenotype is
adaptive
Genetic bottlenecks and the founder effect tend to
, BIOS 280 Exam 1with Complete Solutions 100% Correct
a. occur at predictable intervals
b. have little effect on evolution
c. select a random sample from a gene pool
d. increase the speed of adaptation Correct Ans-c. select a random sample from a gene
pool
Which of the following statements is NOT central to the theory of uniformitarianism?
a. Geological change happens gradually for the most part.
b. Earth is very old.
c. Geological processes that are observable today operated the same way in the past.
d. Catastrophic events such as floods and volcanoes have played the primary role in shaping
the earth's existing features. Correct Ans-d. Catastrophic events such as floods and
volcanoes have played the primary role in shaping the earth's existing features.
The gill pouches of a lizard embryo and the gill pouches of a mouse embryo are
, BIOS 280 Exam 1with Complete Solutions 100% Correct
a. homozygous
b. adaptive
c. homologous
d. analogous Correct Ans-c. homologous
John Ray, William Paley, and other proponents of "natural theology" believed that the
complexity of organismal structure is evidence
a. that God endowed species with a drive to become more complex over time.
b. that a benevolent God designed all organisms.
c. that Earth has always existed.
d. that God established the process by which organisms evolve. Correct Ans-b. that a
benevolent God designed all organisms.
(Note that the blue triangle on the graph indicates the mean). The graph below shows that
a. a bird's beak depth is correlated with its fitness.
b. the most common beak depth is smaller than the average beak depth.
, BIOS 280 Exam 1with Complete Solutions 100% Correct
c. beak depth varies.
d. beaks with larger depth are more advantageous than beaks with smaller depths. Correct
Ans-c. beak depth varies.
-only 1 graph showing the size of finch beaks
Gene duplication
a. results in genes that are orthologs.
b. cannot lead to functional redundancy.
c. can result in one of the copies gaining a new function.
d. all of the above Correct Ans-c. can result in one of the copies gaining a new function.
Non-random mating, by itself, can cause ___________ to change over time.
a. genotype frequencies
b. substitution rates
c. mutation rates
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