1
bio 117 practice exam 1 Questions with Answers (100%
Correct Answers)
a change in an allele frequency over time Answer: evolution
all the individuals in a group in a specific geographic region Answer:
population
a heritable trait that increases the fitness of an individual in a particular
environment Answer: adaptation
survival and reproductive success of an individual Answer: fitness
how many taxa are shown in the tree above
lungfish
lizard
dog
human Answer: four
the group mammals includes dogs and humans. which of the following
is/are an ancestral trait of mammals? Answer: skull and limbs
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, 2
the group tetrapods includes lizards, dog and human. which of the
following is a synapomorphy for tetrapods? Answer: limbs
which of the following is NOT an assumption of hardy Weinberg
equilibrium and its associated equations? Answer: mutations can occur
in the population
male fireflies uses flashes of light to attract females. if the pattern of
flashing is not correct, a female firefly won't mate with a male. Answer:
behavioral isolation
two different species of fruit trees a plum and apricot can produce a
hybrid offspring called an apriplum. apriplums, however, cannot
reproduce. Answer: hybrid sterility
two different populations of stoneflies live in two nearby streams.
however, the adults from one population have mated and died about a
month before the adults from the second population are mature
enough to mate. Answer: temporal isolation
guppies are small tropical fish that live in rivers. two populations of
guppies live near each other. scientists inseminate female guppies from
© 2025 All rights reserved
bio 117 practice exam 1 Questions with Answers (100%
Correct Answers)
a change in an allele frequency over time Answer: evolution
all the individuals in a group in a specific geographic region Answer:
population
a heritable trait that increases the fitness of an individual in a particular
environment Answer: adaptation
survival and reproductive success of an individual Answer: fitness
how many taxa are shown in the tree above
lungfish
lizard
dog
human Answer: four
the group mammals includes dogs and humans. which of the following
is/are an ancestral trait of mammals? Answer: skull and limbs
© 2025 All rights reserved
, 2
the group tetrapods includes lizards, dog and human. which of the
following is a synapomorphy for tetrapods? Answer: limbs
which of the following is NOT an assumption of hardy Weinberg
equilibrium and its associated equations? Answer: mutations can occur
in the population
male fireflies uses flashes of light to attract females. if the pattern of
flashing is not correct, a female firefly won't mate with a male. Answer:
behavioral isolation
two different species of fruit trees a plum and apricot can produce a
hybrid offspring called an apriplum. apriplums, however, cannot
reproduce. Answer: hybrid sterility
two different populations of stoneflies live in two nearby streams.
however, the adults from one population have mated and died about a
month before the adults from the second population are mature
enough to mate. Answer: temporal isolation
guppies are small tropical fish that live in rivers. two populations of
guppies live near each other. scientists inseminate female guppies from
© 2025 All rights reserved
