Name:__________________________________________ Biology Period___________ Date______________
Chapter 11 Key Vocabulary Review
MATCHING
Place the word and letter in the blank next to the correct definition.
a.
b.
c.
d.
e.
f.
g.
h.
i.
j.
k.
l.
Gene pool
Allele frequency
Normal distribution
microevolution
Directional selection
Stabilizing selection
Disruptive selection
Gene flow
Genetic drift
Bottleneck effect
Founder effect
Sexual selection
Letter
Word
m.
n.
o.
p.
q.
r.
s.
t.
u.
v.
w.
x.
Hardy-Weinberg equilibrium
Reproductive isolation
Speciation
Behavioral isolation
Geographic isolation
Temporal isolation
Convergent evolution
Divergent evolution
Coevolution
Extinction
Punctuated equilibrium
Adaptive radiation
Definition
Elimination of a species from Earth.
Pathway of natural selection in which one uncommon phenotype
is selected over a more common phenotype.
Isolation between populations due to physical barriers.
Process in which two or more species evolve in response to
changes in each other.
Proportion of one allele, compared with all the alleles for that trait,
in the gene pool.
Condition in which a population’s allele frequencies for a given
trait do not change from generation to generation.
Change in allele frequencies due chance alone, occurring most
commonly in small populations.
Process by which one species evolves and gives rise to many
descendant species that occupy different ecological niches.
Isolation between populations due to barriers related to time, such
as differences in mating periods or differences in the time of day
that individuals are most active.
Genetic drift that results from an event that drastically reduces the
size of a population.
Observable change in the allele frequencies of a population over a
few generations.
Pathway of natural selection in which two opposite, but equally
uncommon, phenotypes are selected over the most common
phenotype.
Isolation between populations due to differences in courtship or
mating behavior.
Evolution of one or more closely related species into different
species; resulting from adaptations to different environmental
conditions.
Collection of alleles found in all of the individuals of a population.
Final stage in speciation, in which members of isolated
populations are either no longer able to mate or no longer able to
produce viable offspring.
Genetic drift that occurs after a small number of individuals
colonize a new area.
Pathway of natural selection in which intermediate phenotypes are
selected over phenotypes at both extremes.
Distribution in a population in which allele frequency is highest
near the mean range value and decreases progressively toward
each extreme end.
Evolution of two or more species from one ancestral species.
Theory that states that speciation occurs suddenly and rapidly
followed by long periods of little evolutionary change.
Selection in which certain traits enhance mating success; traits are,
therefore, passed on to offspring.
Evolution towards similar characteristics in unrelated species,
resulting from adaptations to similar environmental conditions.
Physical movement of alleles from one population to another.