Biological Science (6th Edition)
6th Edition
ISBN: 9780321976499
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Emily Taylor, Greg Podgorski, Jeff Carmichael
Publisher: PEARSON
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Chapter 22, Problem 7TYU
Summary Introduction
Introduction:
Evolution refers to the alteration in the heritable characteristics of the biological population over a period of generations. Evolutionary processes lead to biodiversity at the different hierarchical levels:
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Is it better for an organism to maximize their direct fitness or their indirect fitness?
a.
Direct Fitness
b.
Indirect Fitness
c.
Trick question. Neither Direct or Indirect Fitness matter in evolution.
When a population is composed of two sexes, why does the rarer sex have a fitness advantage?
Which statement illustrates the connection between natural selection and overreproduction of a population?
a) populations vary in their inherited traits.
b) species produce more offspring than can survive in the environment.
c) individuals with inherited traits that promote survival tend to have more surviving offspring.
d) individuals with traits that do not enhance survival cannot reproduce.
Chapter 22 Solutions
Biological Science (6th Edition)
Ch. 22 - True or false? Some trails are considered...Ch. 22 - CAUTION Why does the presence of extinct forms and...Ch. 22 - 3. Trails that are derived from a common ancestor,...Ch. 22 - CAUTION How can evolutionary fitness be estimated?...Ch. 22 - 5. CAUTION According to data presented in this...Ch. 22 - Some biologists summarize evolution by natural...Ch. 22 - Prob. 7TYUCh. 22 - SOCIETY Explain why the overprescription of...Ch. 22 - 9. The average height of humans in industrialized...Ch. 22 - Prob. 10TYPSS
Ch. 22 - How can natural selection on mouse color be...Ch. 22 - 12. CAUTION What is an evolutionary adaptation?
a....Ch. 22 - Apply Darwin’s four postulates to a population of...Ch. 22 - 14. PROCESS OF SCIENCE A team lead by evolutionary...Ch. 22 - Prob. 15PIATCh. 22 - 16. PROCESS OF SCIENCE When a statistical test was...
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- In which situation will populations experience gene flow? A)hybridization between two populations of ground beetles B)natural-selection pressures between two populations of dragonflies C)mate competition between two populations of red-legged grasshoppers D)intersecting migration routes between two populations of monarch butterfliesarrow_forwardWhich statement best explains why an understanding of life-history trade-offs is important when examining the fitness of an organism? A. Because individuals may not be producing the maximum number of offspring they possibly can in any particular breeding season. B. Because in any particular breeding season, individuals may need to produce fewer offspring to enhance their own survival. C. Because individuals need to live longer, so they will not produce the maximum number of offspring each season. D. Because when individuals need offspring, they can choose whether to reproduce or not.arrow_forwardWhich option would not disturb a Hardy-Weinberg Equilibrium in a population? a) Random mating b) Gene flow c) Genetic drift d) Genetic mutationarrow_forward
- Give typing answer with explanation and conclusion Which of the following statements is false? Question 5 options: A) When insect populations are attacked with pesticides, the populations increase their mutation rates so that they can develop pesticide-resistant alleles. B) Small populations have smaller gene pools than larger populations. C) The fittest members of a population leave more offspring than less-fit individuals. D) Natural selection is responsible for most adaptive changes in populationsarrow_forwardPredict the consequences to a population if the gene pool changes significantly over time and justify the predictions.arrow_forwardExplain 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 smallerarrow_forward
- Which statement best describes the recovery of the Mexican wolf population? A. It is experiencing logistic growth because the rate of population growth increases without slowing. B. It is experiencing logistic growth because the rate of population growth increases but slows with time. C. It is experiencing exponential growth because the rate of population growth increases without slowing. D. It is experiencing exponential growth because the rate of population growth increases but slows with time.arrow_forwardIf something happened in North America to decrease the wolf population, how would this affect the deer population? how would the graph from (e) change?arrow_forwardUse the diagram below to answer the question. In the population of insects shown, insects with spots have the genotype Aa or AA and bugs with no spots have the genotype aa. Which argument best supports the phenomenon shown in the diagram? There was an increase in the fitness of the gene There was an increase in the fitness of the gene There was an increase in the mutation rate of gene There was an increase in the mutation rate of genearrow_forward
- Imagine a population of crabs living on a white sandy beach. The crabs ONLY occur in two color - red and blue, each controlled by color genes. Over time, will the crab population shift toward white? Why or why not?arrow_forwardDescribe a situation in which a population would undergo the bottleneck effect and explain what impact that would have on the population’s gene pool.arrow_forwardIn a particular bird species who live socially, we sometimes see an individual in the social group helping to rear the offspring of its siblings, rather than finding a mate and reproducing itself. Describe the expected relative importance of direct and indirect fitness benefits to the individual helper, explain your answer. Explain how this same helper could improve its fitness by helping raise the offspring of an unrelated couple.arrow_forward
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