WGU C190 - Intro to Biology – Macroevolution Questions
with complete solution 2026
1. Species Microevolution is to popula-
tion as macroevolution is to
.
2. How are the processes of microevolution Microevolution is the
and macroevolution related to each
process by which
other?
populations evolve over a
relatively short amount of
time (a few to several gen-
erations). Macroevolution
is the process by which
lineages (species) or
groups of popula-tions
evolve over relatively long
amounts of time
(hundreds to thousands
of generations or more).
The changes that oc-cur in
a population as a re-sult
of microevolution can be
passed on to the other
popu-lations within the
3. Consider the apple-breeding and hawthorn- lineage due to gene flow,
breed-ing flies. and in time, may lead to
Is this an example of speciation? macroevolution.
The apple- and
4. Scientists have found that apple-breeding hawthorn-breeding flies
and
are beginning to diverge
into dis-tinct species.
We cannot say that specia-
1/
16
,hawthorn-breeding flies can mate and produce fer- tion is complete, but
evidence tile offspring. However, they rarely do so under nat-
indicates that it may happen ural conditions. What does this say about
speciation over time as the flies continue in this case?
2/
16
, WGU C190 - Intro to Biology -
Macroevolution
to specialize on ditterent host
plants.
N. parvulus on Santa
5. Recently scientists have compared the
Cruz - Populations that were
genetics of several different mockingbird
close to-gether in space
populations repre-senting all four species
had more sim-ilar
throughout the Galapagos Islands. For
genetics. This is a result
example, they compared the genes of a
population of N. parvulus on Baltra to of continuing migration and
those of
all the other populations in their sample. Where do gene flow between
neighbor-
you think they found the closest match? ing populations.
6. What event occurred at the circle? Speciation event - Two
new species arose from
this point.
7. Macroevolution A change in a biological
lin-eage including the
origin or extinction of
species. This is evolution
beyond the species
level.
8. If you were tracing back to the most recent common B: The node at B
represents the
ancestor of N. trifasciatus and N. macdonaldi, what most recent common
ancestor
point would you pick?
3/
16
with complete solution 2026
1. Species Microevolution is to popula-
tion as macroevolution is to
.
2. How are the processes of microevolution Microevolution is the
and macroevolution related to each
process by which
other?
populations evolve over a
relatively short amount of
time (a few to several gen-
erations). Macroevolution
is the process by which
lineages (species) or
groups of popula-tions
evolve over relatively long
amounts of time
(hundreds to thousands
of generations or more).
The changes that oc-cur in
a population as a re-sult
of microevolution can be
passed on to the other
popu-lations within the
3. Consider the apple-breeding and hawthorn- lineage due to gene flow,
breed-ing flies. and in time, may lead to
Is this an example of speciation? macroevolution.
The apple- and
4. Scientists have found that apple-breeding hawthorn-breeding flies
and
are beginning to diverge
into dis-tinct species.
We cannot say that specia-
1/
16
,hawthorn-breeding flies can mate and produce fer- tion is complete, but
evidence tile offspring. However, they rarely do so under nat-
indicates that it may happen ural conditions. What does this say about
speciation over time as the flies continue in this case?
2/
16
, WGU C190 - Intro to Biology -
Macroevolution
to specialize on ditterent host
plants.
N. parvulus on Santa
5. Recently scientists have compared the
Cruz - Populations that were
genetics of several different mockingbird
close to-gether in space
populations repre-senting all four species
had more sim-ilar
throughout the Galapagos Islands. For
genetics. This is a result
example, they compared the genes of a
population of N. parvulus on Baltra to of continuing migration and
those of
all the other populations in their sample. Where do gene flow between
neighbor-
you think they found the closest match? ing populations.
6. What event occurred at the circle? Speciation event - Two
new species arose from
this point.
7. Macroevolution A change in a biological
lin-eage including the
origin or extinction of
species. This is evolution
beyond the species
level.
8. If you were tracing back to the most recent common B: The node at B
represents the
ancestor of N. trifasciatus and N. macdonaldi, what most recent common
ancestor
point would you pick?
3/
16
