Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Chapter 19, Problem 18TYU
PREDICT You study males in populations of a certain species of minnows in a series of lakes at different latitudes. You find that they exhibit clinal variation in average weight at maturity and hypothesize that the weight differences are due to genetic factors. What might you predict about the average weights at maturity of representatives of each population reared in aquaria if your hypothesis is correct?
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Explain what genetic variation is and how is it beneficial to a population facing an environmental challenge. Engage in argument from evidence whether small or large body size is more fit for survival in the fish populations. Predict what is likely to happen to body size for fish harvested by nets if the holes in the nets were to become smaller
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In a population of birds, males have long red tail feathers that they use in mating displays, and also sing in the mornings to attract females. You find that some males have more red feathers in their tails than others, while some sing for longer periods of time. In this bird species, a high proportion of eggs fail to hatch. You measure the number of eggs that successfully hatch that are fathered by each male bird, and find that the number of successful hatchlings is proportional to how long a male sings, but is unrelated to the amount of red in his tail.
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Propose an explanation for why males evolved both to sing and to have red tails, and how females likely evolved in response to both traits.
[Note: avoid writing a paragraph for each sentence prompt; this should still be short, concise answers and Please write four sentences guided by the individual prompts]
Your answer:
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Sentence 2: What feature…
Chapter 19 Solutions
Biology (MindTap Course List)
Ch. 19.1 - Define what is meant by a populations gene pool.Ch. 19.1 - Distinguish among genotype, phenotype, and allele...Ch. 19.1 - Prob. 1CCh. 19.1 - Can the frequencies of all genotypes in a...Ch. 19.1 - INTERPRET DATA In a human population of 1000, 840...Ch. 19.2 - Discuss the significance of the HardyWeinberg...Ch. 19.2 - Prob. 4LOCh. 19.2 - INTERPRET DATA In a population at genetic...Ch. 19.2 - INTERPRET DATA In a population at genetic...Ch. 19.2 - INTERPRET DATA The genotype frequencies of a...
Ch. 19.3 - Prob. 5LOCh. 19.3 - Discuss how each of the following...Ch. 19.3 - Distinguish among stabilizing selection,...Ch. 19.3 - Which microevolutionary force leads to adaptive...Ch. 19.3 - Why is mutation important to evolution if it is...Ch. 19.3 - Which microevolutionary forces are most associated...Ch. 19.3 - Prob. 4CCh. 19.4 - Prob. 8LOCh. 19.4 - Prob. 1CCh. 19.4 - Prob. 2CCh. 19.4 - How can researchers test the hypothesis that...Ch. 19 - The genetic description of an individual is its...Ch. 19 - In a diploid species, each individual possesses...Ch. 19 - The MN blood group is of interest to population...Ch. 19 - If a populations allele and genotype frequencies...Ch. 19 - Prob. 5TYUCh. 19 - The continued presence of the allele that causes...Ch. 19 - According to the HardyWeinberg principle, (a)...Ch. 19 - Prob. 8TYUCh. 19 - Mutation (a) leads to adaptive evolutionary change...Ch. 19 - Which of the following is not true of natural...Ch. 19 - If all copies of a given locus have the same...Ch. 19 - Prob. 12TYUCh. 19 - EVOLUTION LINK Given that mutations are almost...Ch. 19 - Prob. 14TYUCh. 19 - Prob. 15TYUCh. 19 - EVOLUTION LINK Evolution is sometimes...Ch. 19 - INTERPRET DATA The recessive allele that causes...Ch. 19 - PREDICT You study males in populations of a...Ch. 19 - Prob. 19TYU
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