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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Textbook Question
Chapter 18, Problem 11TYU
CONNECT What types of gene changes are most associated with the evolution of new anatomical features in a population?
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What types of gene changes are most associated with the evolution of new anatomical features in a population?
Briefly explain how molecular biology and developmental biology provide insights into the evolutionary process.
According to Darwin’s model of evolution, evolution can only occur if there is some variation present among the individual members of a population. Which statement best describes the source of this variation among members of a species?
A) individuals will vary depending on geography and climate
B) variation exists because not all genes will be expressed
C) variation among individuals may arise as a result of mutations in the genetic code
D) variation exists because different individuals will have different access to food and other resources
Chapter 18 Solutions
Biology (MindTap Course List)
Ch. 18.1 - Prob. 1LOCh. 18.1 - Prob. 1CCh. 18.1 - Prob. 2CCh. 18.2 - Prob. 2LOCh. 18.2 - Prob. 1CCh. 18.2 - Prob. 2CCh. 18.3 - Explain the four premises of evolution by natural...Ch. 18.3 - Compare the modern synthesis with Darwins original...Ch. 18.3 - Prob. 1CCh. 18.3 - Why are only inherited variations important in the...
Ch. 18.3 - What was missing in Darwins explanation of...Ch. 18.4 - Summarize the evidence for evolution obtained from...Ch. 18.4 - Define biogeography and describe how the...Ch. 18.4 - Describe the evidence for evolution derived from...Ch. 18.4 - Briefly explain how molecular biology and...Ch. 18.4 - Prob. 9LOCh. 18.4 - Prob. 1CCh. 18.4 - How can we explain that fossils of Mesosaurus an...Ch. 18.4 - How do homologous and homoplastic features provide...Ch. 18.4 - How does developmental biology provide evidence of...Ch. 18.4 - How do predator preferences drive the evolution of...Ch. 18 - Evolution is based on which of the following...Ch. 18 - Evolution is the accumulation of genetic changes...Ch. 18 - Charles Darwin proposed that evolution could be...Ch. 18 - Which of the following is not part of Darwins...Ch. 18 - The evolution of beak size in the various species...Ch. 18 - The fossil record (a) usually occurs in...Ch. 18 - In _______________ the selecting agent is the...Ch. 18 - Aardvarks, anteaters, and pangolins are only...Ch. 18 - Prob. 9TYUCh. 18 - CONNECT In what way does the modern synthesis...Ch. 18 - CONNECT What types of gene changes are most...Ch. 18 - EVOLUTION LINK The use of model organisms such as...Ch. 18 - EVOLUTION LINK Charles Darwin once said, It is not...Ch. 18 - EVOLUTION LINK Write short paragraphs explaining...Ch. 18 - EVOLUTION LINK Although most salamanders have four...Ch. 18 - INTERPRET DATA Which of the primates in Figure...Ch. 18 - Prob. 17TYU
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- Define the five agents of evolutionary change.arrow_forwardWhat is an Analogy? A) When an anatomic feature is shared among organisms and their descendants B) When two organisms appear the same C) When convergent evolution produces similar phenotypesarrow_forwardAccording to Darwin’s model of evolution, evolution can only occur if there is some variation present among the individual members of a population. Which statement best describes the source of this variation among members of a species? A) variation exists because different individuals will have different access to food and other resources B) individuals will vary depending on geography and climate C) variation exists because not all genes will be affected D) variation among individuals may arise as a result of mutations in the genetic codearrow_forward
- What is a Homology? A) When an anatomic feature is shared among organisms and their descendants B) When two organisms appear the same C) When convergent evolution produces similar phenotypesarrow_forward1)Provide a scientific example of evolution and/or natural selection. You can use human and/or animal examples.2) Describe how the animal/species developed an advantage over time or what the evolutionary process was.3) Give a source for where you located your information.arrow_forwardDescribe the molecular basis of changes in the gene pool and the significance of these changes over time, including mutations and natural selection.arrow_forward
- Which of the evolutionary processes discussed in the material presented can introduce genetic variation into a population? a) natural selection and genetic drift b) mutation and gene flow c) natural selection and nonrandom mating d) mutation and genetic driftarrow_forward6) The lens of the vertebrate eye develops only after the head ectoderm comes in contact with the optic cup. This is an example of A) Determination B) Differentiation C) Pattern formation D) Induction 5) The evolutionary process most likely to account for the fixation of neutral or even non-adaptive genes or gene combinations in small populations is called A) Darwinian selection B) Recombination C) Mutation D) Genetic driftarrow_forwardWhich of the following promotes adaptive evolution in populations? A)High genetic diversity B)Selection pressure for an environmental factor that is changing C)Greater survival and reproduction in organisms with inherited traits D)All of the above At what rate do adaptations occur in populations? A)Adaptations occur slowly, due to very low mutation rates. B)Adaptations occur quickly, due to the ability of organisms to quickly acquire traits from their environment. C)Adaptation rates can be fast when selection pressures are strong. D)Adaptation rates are always slow, due to genetic drift. Gene flow among populations results in which impact on adaptation? A)It increases the occurrence of adaptation by introducing new genes. B)It slows the process of adaptation by introducing alleles that keep the population from being dominated by the alleles best suited for the environment. C)It increases the occurrence of adaptation by moving traits acquired…arrow_forward
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