Campbell Biology In Focus, Loose-leaf Edition (3rd Edition)
3rd Edition
ISBN: 9780134895727
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky
Publisher: PEARSON
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Chapter 39.5, Problem 2CC
MAKE CONNECTIONS Balancing selection can maintain variation at a locus (see Concept 21.4). Based on the foraging experiments described in this chapter, devise a simple hypothesis to explain the presence of both forR and forS alleles in natural fly populations.
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Explain how natural selection might be responsible for the PTC taster polymorphism.Why might some populations have a higher frequency of the taster allele than others?
> Within a certain population, there are exactly 2 alleles at the T locus: T and t. Among the
entire population, 30% of the alleles are T. If this population is in Hardy Weinberg equilibrium, what
proportions (or percentages, however, you want to express it) will be TT, Tt, and tt? Show work.
In a population, there are 75 TT individuals, 25 Tt individuals, and 250 tt individuals.
What are the frequencies of T and t? Show work.
What are the "expected" numbers of each genotype? Show work.
Ís this population in Hardy Weinberg equilibrium? (don't do Chi², just compare your answer in
a)
b)
c)
part b io actual and it should be obvious.)
) Assume that, in a population of deer, two alleles exist for eye color. BB deer have blue eyes,
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Chapter 39 Solutions
Campbell Biology In Focus, Loose-leaf Edition (3rd Edition)
Ch. 39.1 - Contrast the role of Ca2+ in the contraction of a...Ch. 39.1 - WHAT IF? Why are the muscles of an animal that has...Ch. 39.1 - Prob. 3CCCh. 39.2 - Prob. 1CCCh. 39.2 - Prob. 2CCCh. 39.2 - Prob. 3CCCh. 39.3 - Prob. 1CCCh. 39.3 - MAKE CONNECTIONS How is the lunar-linked rhythm of...Ch. 39.4 - How might associative learning explain why...Ch. 39.4 - Prob. 2CC
Ch. 39.4 - MAKE CONNECTIONS How might a learned behavior...Ch. 39.5 - Prob. 1CCCh. 39.5 - MAKE CONNECTIONS Balancing selection can maintain...Ch. 39.6 - Prob. 1CCCh. 39.6 - Prob. 2CCCh. 39 - During the contraction of a vertebrate skeletal...Ch. 39 - Prob. 2TYUCh. 39 - According to Hamiltons rule, A. natural selection...Ch. 39 - The binding of calcium to the troponin complex A....Ch. 39 - Curare, a substance that blocks the acetylcholine...Ch. 39 - Prob. 6TYUCh. 39 - Prob. 7TYUCh. 39 - SCIENTIFIC INQUIRY Propose a hypothesis to explain...Ch. 39 - Prob. 9TYUCh. 39 - Prob. 10TYUCh. 39 - FOCUS ON INFORMATION Learning is defined as a...Ch. 39 - Prob. 12TYU
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- Consider the data that are summarised in the figure i. The data in part (a) are consistent with the hypothesis that alarm calling only in female black-tailed prairie dogs evolved in accordance with kin selection. ii. On the basis of the data in part (a), male black-tailed prairie dogs without kin in their home coteries almost are as likely (i.e., within 10%) to produce alarm calls as are female black-tailed prairie dogs with kin in their home coteries.iii. On the basis of the data in the figure, males and females produce alarm calls more often when the kin that they live with are offspring than when the kin that they live with are parents and siblings.iv. On the basis of the data in part (b), alarm calls in black-tailed prairie dogs constitute merely parental care (i.e., rather than altruism).v. On the basis of the data in part (b), mean alarm calling percentage is greater for male black-tailed prairie dogs than for female black-tailed prairie dogs. Question 2 options:…arrow_forwardGive typed full explanationarrow_forwardHow does the aminoacyl trna synthetases recognize which trna gets its amino acid? Define compare and contrast and give examples of natural selection and the impact on allele frequencies through mechanisms such as stabilizing selection directional selection and disruptive selection?In the human brain a great deal of synaptic pruning occurs in early childhood?arrow_forward
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