BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 54, Problem 6DA
Summary Introduction
To determine: The rate of population increase after 10 generations in mouse species.
Introduction: Horizontal gene transfer can be defined as the exchange of genetic contents between the unicellular and multi-cellular organisms that do not include the transmission of DNA from parent to offspring. This process is responsible for evolution by mixing the genetic material of two species.
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EVOLUTION ASSESSMENT - FINCHES
Galápagos Ground Finches
Between 1973 and 1978, the population of ground finches (a type of small bird) on the Galápagos Islands
decreased. Scientists made observations of the population throughout that time period. They recorded
and graphed differences in the distribution of traits over time. The two sets of graphs below come from
the data they collected.
Beak Length for Ground Finches Observed in the Wet Seasons of 1973 and 1978
Wet 1973: all finches
# of finches
30
# of finches
25
20
15
10
5
0
30
25
20
15
10
5
12-01
0
$4.9
80-84
30.0-
11.5-11.9
Beak Length (mm)
Source: inquiryHub
35.0-39.9
40.0-44.9
12.5-12.9
13.0-13.4
13.5-13.9
14.0-
Wing Length for Ground Finches Observed in the Wet Seasons of 1973 and 1978
Wet 1973: all finches
65.0
Wing Length (mm)
Source: inquiryHub
70.0-74.9
# of finches
75.0-
30
25
# of finches
20
10
5
0
30
25
20
15
O
10
5
0
Wet 1978: all finches
7.0-74
7.5-7.9
80-8.4
85-80
9.0-94
9.5-9.9
10.0-1
30.0-34.9
10.5-10.9
11.0-11.4…
Peppered Moth Experiment
Researchers wanted to further test the idea that Peppered Moth
populations around London really shifted due to their increased
visibility to predators on dark trees. Researchers constructed two
sample forest plots, each surrounded by bird-proof netting. In both
enclosures they captured ALL the moths and ALL the birds. Trees in
each enclosure were stripped of lichens so they ALL had dark bark. The
treatments for each enclosure were as follows:
Enclosure A: 50 dark-colored moths and 50 light-colored moths were
released.
Enclosure B: 50 dark-colored moths and 50 light-colored moths were
released, plus 10 birds.
Proportions of dark and light moths were monitored in each enclosure
for 10 years by thorough sampling (sampling did not harm moths).
Results for moth populations after 10 years are reported in the chart
below. In addition, the bird population in Enclosure B was remained
fairly constant over the 10 years and no birds appeared in Enclosure A.
Enclosure…
Two human populations have the same net reproductive rates (R0), but different generationtimes. In what ways are these two populations similar and different?
Chapter 54 Solutions
BIOLOGY
Ch. 54.1 - Prob. 1LOCh. 54.1 - Prob. 2LOCh. 54.1 - Explain how species adapt to environmental...Ch. 54.2 - Prob. 1LOCh. 54.2 - Prob. 2LOCh. 54.3 - Prob. 1LOCh. 54.3 - Prob. 2LOCh. 54.3 - Prob. 3LOCh. 54.4 - Prob. 1LOCh. 54.4 - Prob. 2LO
Ch. 54.5 - Prob. 1LOCh. 54.5 - Discuss why populations cannot grow exponentially...Ch. 54.5 - Define carrying capacity and explain what might...Ch. 54.6 - Prob. 1LOCh. 54.6 - Prob. 2LOCh. 54.6 - Prob. 3LOCh. 54.7 - Prob. 1LOCh. 54.7 - Prob. 2LOCh. 54.7 - Prob. 3LOCh. 54 - Prob. 1DACh. 54 - Prob. 2DACh. 54 - Prob. 3DACh. 54 - Prob. 4DACh. 54 - Prob. 5DACh. 54 - Prob. 6DACh. 54 - Prob. 1IQCh. 54 - Prob. 2IQCh. 54 - Prob. 3IQCh. 54 - Prob. 4IQCh. 54 - Prob. 5IQCh. 54 - Prob. 6IQCh. 54 - Prob. 7IQCh. 54 - Prob. 8IQCh. 54 - Suppose experimenters artificially kept the hare...Ch. 54 - Prob. 10IQCh. 54 - Prob. 11IQCh. 54 - Prob. 12IQCh. 54 - Source-sink metapopulations are distinct from...Ch. 54 - The potential for social interactions among...Ch. 54 - When ecologists talk about the cost of...Ch. 54 - Prob. 4UCh. 54 - The difference between exponential and logistic...Ch. 54 - Prob. 6UCh. 54 - Which of the following is an example of a...Ch. 54 - If the size of a population is reduced due to a...Ch. 54 - In populations subjected to high levels of...Ch. 54 - In a population in which individuals are uniformly...Ch. 54 - Prob. 4ACh. 54 - Refer to figure 55.8. What are the implications...Ch. 54 - Prob. 2SCh. 54 - Refer to figure 55.14. Because the number of...Ch. 54 - Refer to figure 55.26. Would increasing the mean...
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