Section 15.2:
Mechanisms of Evolution
1.
A plant that grows in North America and one that grows in the African desert look similar but are not related. What is this an example of?
a.
convergent evolution
b.
divergent evolution
c.
reproductive isolation
d.
adaptive radiation
Hint
2.
__________ occurs when speciation happens in quick, rapid bursts, followed by periods of genetic equilibrium in between.
a.
Reproductive isolation
b.
Genetic drift
c.
Punctuated equilibrium
d.
Stabilizing selection
Hint
3.
A population that is __________ is not evolving.
a.
in genetic equilibrium
b.
in genetic drift
c.
part of the gene pool
d.
geographically isolated
Hint
4.
Which of these occurs when organisms that had historically interbred can no longer mate and produce fertile offspring?
a.
polyploidy
b.
reproductive isolation
c.
gradualism
d.
geographic isolation
Hint
5.
Which of these favors only one of the extreme variations of a trait?
a.
stabilizing selection
b.
directional selection
c.
disruptive selection
d.
equilibrium selection
Hint
