Unit Test — Unit test Answers
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Which best describes the fossil record?
A
The fossil record cannot provide evidence of evolution.B
The fossil record provides evidence of a common ancestor to many species.C
The fossil record provides evidence that disputes the theory of evolution.D
The fossil record is inaccurate because scientists are not able to date fossils.22
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In a cladogram, when does a group of organisms branch off?
A
when a new trait evolvesB
when an ancestor becomes extinctC
when it is discoveredD
when it becomes large enough23
Which feature separates humans from other primates?
A
smaller brain sizeB
bipedalismC
use of toolsD
complex social skills24
Consider the generalized cladogram of fish.A fossilized fish is found that has jaws but no true bones. Where does this fossil belong on the cladogram?
A
AB
BC
CD
D25
Evolution is change in a population over time and includes the gene pools of that population. How does biogeographic isolation allow for the change of gene pools over time?
A
Biogeographic isolation affects the random changes that take place within gene pools.B
Biogeographic isolation causes changes in gene pools that result from populations being separated.C
Biogeographic isolation determines who will win competition for mates.D
Biogeographic isolation determines the time that populations will breed.Did you find these answers helpful?
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