AP Biology (Mader), 11th Edition

Chapter 16: How Populations Evolve

Pre-Test

1
A group of organisms of the same species living together in the same geographic region is a (an):
A)community.
B)population.
C)ecosystem.
2
The total of all the genes of all the individuals in a population is the _____.
A)gametes
B)zygotes
C)gene pool
D)phenotype
3
All of the following factors cause deviations from a Hardy-Weinberg equilibrium of allele frequencies EXCEPT:
A)Mutations
B)Migration
C)No selection
D)Nonrandom mating
4
Hospital data have shown that human infants born with intermediate birth weights have a better chance of survival. Large babies tend to have more difficulties during delivery and smaller babies may not have fully functional organ systems. This is an example of what type of selection?
A)Disruptive
B)Stabilizing
C)Directional
5
Stabilizing selection:
A)reduces the variability in populations.
B)increases the variability in populations.
C)does not affect the variability in populations.
Glencoe Online Learning CenterScience HomeProduct InfoSite MapContact Us

The McGraw-Hill CompaniesGlencoe

Please read our Terms of Use and Privacy Notice before you explore our Web site. To report a technical problem with this Web site, please contact the Web Producer.