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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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
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- When we say that an individual organism has a greater fitness than another individual, we specifically mean that the organism: Group of answer choices a. utilizes resources more efficiently than other species occupying the same niches, or habitats b. lives longer than others of its species c. mates more frequently than others of its species d. competes more successfully for resources than others of its species e. leaves more viable offspring than others of its speciesarrow_forwardWhich statement least applies to the concept of fitness? A. Measures of fitness include mating sucess and fecundity. B. It is trait featured among organisms which survived a bottleneck event. C. Reproductive sucess of individuals can be enhanced by their social behaviors within a group. D. Fitness among individuals in a population can vary due to differential reproduction.arrow_forwardYou are studying a population of mulberry plants. The average mulberry produces 55 leaves, but an insect herbivore preferentially kills plants with more leaves, and therefore the remaining population has an average of 35 leaves after the insects kill certain plants due to the herbivory. The heritability of leaf number is 0.75. What is the response to the selection imposed by the insect herbivores? a. -10 leaves b. -20 leaves c. -15 leaves d. -5 leavesarrow_forward
- In 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_forwardHelping kin raise offspring is one way individuals can increase their inclusive fitness. Imagine there is a family of birds. If any male individual breeds alone, they will have three offspring. If a beta (B) male helps an alpha (A) male, then beta will have no offspring. If an alpha is helped by a beta, then alpha will have eight offspring. At which generation does it no longer benefit beta to help alpha? Generation 1 Generation 2 Generation 3 A A A B Вarrow_forwardDarwinian fitness is a measure of a. survival. b. reproductive success. c. heterozygosity of the gene pool. d. polymorphisms in a population.arrow_forward
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