Chapter
23: The Evolution of Populations review answers
1) the source of genetic
variation
2) blending hypothesis
3) change
in gene frequency in gene pools
4) It exemplifies the tentative nature of
scientific knowledge.
5) The two
phenotypes are about equally adaptive under laboratory conditions.
7) 0.48
8) the
frequency of all genotypes must be equal.
9)
49
10) 42
11) 0.32
12)
0.50
13) heterozygous for the allele.
14) greater than 0.64
15)
.400
16)
.600
17) 0
18) 1,920
19)
0.80
20) an
increasing mutation rate
21) sexual recombination
22) duplication
23) the allele reduces fitness.
24) natural
selection.
25) differential
reproductive success.
26) gene flow.
27) populations.
28) 0.1 a, 0.9 A
29) 100
30)
genetic drift.
31)
Diploid organisms express less of their genetic variability than haploid
organisms.
32) the number of its
offspring that survive to reproduce.
33) natural selection
cannot act upon it to make a population better adapted over the course of
generations.
34) that the organism
leaves more viable offspring than others of its species.
35) It is the differential survival and
reproduction of the most fit phenotypes.
36) relative fitness.
d 37)
e 38)
c 39)
b
40)
c 41)
d 42)
b 43)
44) artificial selection & directional
selection
45) diploidy
46)
They have a relative evolutionary fitness of zero.
47) stabilizing
selection
48) directional selection
49) a male lion's mane
50) Given enough time, these flies will develop
longer antennae and become perfect mimics.
51) genetic drift.
52) change in the gene pool of a population due to differential
reproductive success
53) gene pool.
54) eight
55) interphase
56) directional selection.
57) reproduce more
successfully than others.
58) intersexual
selection for traits, such as long tails, that help males attract mates.
59) sexual
recombination.
60) stabilizing
selection.