Biology (Mader), 10th Edition

Chapter 16: How Populations Evolve

Pre-Test

1
All the members of a single species occupying a particular area at the same time is a _____.
A)community
B)population
C)neighborhood
2
The various alleles at all the gene loci in all individuals make up the _____ of the population.
A)gametes
B)zygotes
C)gene pool
D)phenotype
3
The Hardy-Weinberg law states that an equilibrium of allele frequencies in a gene pool will remain in effect in each succeeding generation of a sexually reproducing population as long as _____ conditions are met.
A)one
B)three
C)five
D)seven
4
In the Hardy-Weinberg equation, 2pq equals the percentage of _____.
A)homozygous dominant
B)homozygous recessive
C)heterozygous
5
Of the conditions that can cause a deviation from the Hardy-Weinberg equilibrium, only _____ causes adaptation to the environment.
A)mutation
B)natural selection
C)gene flow
D)nonrandom mating
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