BIO 117 Exam Questions with 100% Correct
Answers
In the Sierra Nevada mountains of California, the monkeyflower
Mimulus lewisii
lives at high elevation and attracts bumblebee pollinators, whereas the closely related
monkeyflower
M. cardinalis
lives at lower elevation and attracts hummingbird pollinators. Which type(s) of
prezygotic or postzygotic mechanisms of reproductive isolation
apply?
The monkeyflowers are experiencing habitat isolation because they live at different
elevations. They also have behavioral isolation because they are attracting different
pollinators, which means the sperm in the pollen from one population will not be carried to
the eggs in the ovules in the other population.
Which species concept would be most useful to a team of biology students conducting a
biodiversity survey on their
campus?
The morphospecies concept
Which of the following is an example of an adaptation in anole
lizards?
long legs in the anole lizards that live primarily on the ground and tree trunks
, What is the most important characteristic of anole lizard species that keeps members of
one species from mating with members of another
species?
Different species living in the same habitat have different dewlaps.
Evolution of shorter legs in anole lizards placed on small, hurricane-scrubbed islands is
an example of which type of
evolution?
microevolution
DNA evidence suggests that anole lizard species from the four largest Caribbean islands
are related as shown in the figure. Which statement is true?
Different body types evolved repeatedly and independently on each island.
Conjugation
Direct contact and DNA sharing between cells
An earthquake decimates a ground squirrel population, killing 98 percent of the
squirrels. The surviving population happens to have broader stripes, on average, than
the initial population. If broadness of stripes is genetically determined, what effect has
the ground-squirrel population experienced during the earthquake?
A genetic bottleneck
A forest fire destroys the majority of individuals in a population of ants. Those that
survive have no special traits that led to their ability to live, but are a random sample of
the original population. The surviving ants reproduce, but the traits of the next
generation are very different from the original population. This is an example of:
Answers
In the Sierra Nevada mountains of California, the monkeyflower
Mimulus lewisii
lives at high elevation and attracts bumblebee pollinators, whereas the closely related
monkeyflower
M. cardinalis
lives at lower elevation and attracts hummingbird pollinators. Which type(s) of
prezygotic or postzygotic mechanisms of reproductive isolation
apply?
The monkeyflowers are experiencing habitat isolation because they live at different
elevations. They also have behavioral isolation because they are attracting different
pollinators, which means the sperm in the pollen from one population will not be carried to
the eggs in the ovules in the other population.
Which species concept would be most useful to a team of biology students conducting a
biodiversity survey on their
campus?
The morphospecies concept
Which of the following is an example of an adaptation in anole
lizards?
long legs in the anole lizards that live primarily on the ground and tree trunks
, What is the most important characteristic of anole lizard species that keeps members of
one species from mating with members of another
species?
Different species living in the same habitat have different dewlaps.
Evolution of shorter legs in anole lizards placed on small, hurricane-scrubbed islands is
an example of which type of
evolution?
microevolution
DNA evidence suggests that anole lizard species from the four largest Caribbean islands
are related as shown in the figure. Which statement is true?
Different body types evolved repeatedly and independently on each island.
Conjugation
Direct contact and DNA sharing between cells
An earthquake decimates a ground squirrel population, killing 98 percent of the
squirrels. The surviving population happens to have broader stripes, on average, than
the initial population. If broadness of stripes is genetically determined, what effect has
the ground-squirrel population experienced during the earthquake?
A genetic bottleneck
A forest fire destroys the majority of individuals in a population of ants. Those that
survive have no special traits that led to their ability to live, but are a random sample of
the original population. The surviving ants reproduce, but the traits of the next
generation are very different from the original population. This is an example of:
