Campbell Biology In Focus
2nd Edition
ISBN: 9780134203072
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Textbook Question
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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It has been found that rats with the genotype Ww are more resistant to Warfarin than either WW that have a VitK deficiency or ww that are very susceptible. Given that the relative fitness values are 1 for Ww, 0.37 for WW and 0.19 for ww, predict the allele and genotype frequencies once Hardy Weinberg equilibrium is established for a rat population in a grain elevator where warfarin is used continually. Suggest what might happen if warfarin use was stopped.
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,
Bb deer have purple eyes, and bb deer have red eyes. Out of a population of 1000 deer, 490 have blue
eyes. You took notes on the amount of red and purple eyed deer, but your notebook fell in the mud and
those numbers are obscured. However, if the population is in…
Chapter 39 Solutions
Campbell Biology In Focus
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 - SCIENTIFIC INQUIRY Scientists studying scrub jays...Ch. 39 - Prob. 10TYUCh. 39 - FOCUS ON INFORMATION Learning is defined as a...Ch. 39 - SYNTHESIZE YOUR KNOWLEDGE Acorn woodpeckers...
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