Campbell Essential Biology (7th Edition)
7th Edition
ISBN: 9780134765037
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece
Publisher: PEARSON
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Textbook Question
Chapter 13, Problem 7SQ
As a mechanism of evolution, natural selection can be most closely equated with
- a. random mating.
- b. genetic drift.
- c. unequal reproductive success.
- d. gene flow.
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Students have asked these similar questions
Alfred Russel Wallace and Charles Darwin argued that evolution by means of natural selection involves all of the following steps except:
a. variation is present in all species
b. species can produce more offspring than the environment can sustain
c. all individuals within a species have equal chances to improve their fitness
d. those individuals that are more fit will survive and reproduce in the greatest numbers
e. over time, the species will evolve as the more fit individuals replace the less fit individuals
In Darwin's theory of natural selection, which of the following is a source of evolution:
a.
Individuals with random mutations who die without reproducing.
b.
Individuals with random mutations who are able to reproduce.
c.
Individuals who do not vary from their progenitors.
d.
Intelligent and purposeful design.
In Darwin's theory of natural selection, which of the following is a source of evolution:
a.Individuals who do not vary from their progenitors.
b.Intelligent and purposeful design.
c.Individuals with random mutations who are able to reproduce.
d.Individuals with random mutations who die without reproducing.
Chapter 13 Solutions
Campbell Essential Biology (7th Edition)
Ch. 13 - Place these levels of classification in order from...Ch. 13 - Which of the following is a true statement about...Ch. 13 - How did the insights of Lyell and other geologists...Ch. 13 - In a population with two alleles for a particular...Ch. 13 - Define fitness from an evolutionary perspective.Ch. 13 - Prob. 6SQCh. 13 - As a mechanism of evolution, natural selection can...Ch. 13 - Prob. 8SQCh. 13 - In a particular bird species, individuis with...Ch. 13 - Prob. 10IMT
Ch. 13 - Prob. 11IMTCh. 13 - For each statement, identify which major theme is...Ch. 13 - Interpreting Data A population of snails has...Ch. 13 - Imagine that the presence or absence of stripes or...Ch. 13 - To what extent are people in a technological...Ch. 13 - What plants and animals have you seen near your...
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- Which aspect(s) of natural selection is(are) illustrated by the figure below? Check ALL answers that apply. A. Variation among individuals must be genetically transmissible to the next generation. B. Variation must exist in a population. C. Variation among individuals leads to differences in lifetime reproductive success. D. More individuals are produced each generation than the environment can support, resulting in competition for survival.arrow_forwardWhich of the following best explains the role mutations play in natural selection?A. Most mutations are negative and result in the extinction of the entire speciesB. Mutations may appear for one or two generations, but they usually disappear quickly.C. If the environment changes, an existing organism develops a mutation that will help them to survive.D. Some mutations give individuals an advantage in their environment, allowing them to survive and reproduce.D is my answer is it correct?arrow_forwardWhich of the following is not a component of evolution bynatural selection?a. Variation exists within a population.b. Organisms compete for resources.c. Individuals have different reproductive success.d. Organisms adapt due to environmental changes.e. Species are fixed.arrow_forward
- Which of the following statements about natural selection is a misconception? a.Most species don't produce more offspring than the environment can support b.Natural selection acts on heritable variations in a population c.Natural selection involves differential reproductive success d.Natural selection occurs as a result of competition among individuals in a population e.In natural selection, traits that are favoured depend on current environmental conditionsarrow_forwardWhat is true about evolution by natural selection? a. It is a largely random process. b. Homology shows that convergence is a useful tool for deducing adaptive function. c. Mothers are invariably members of the same species as their offspring, so selection can never create new species. d. Harmful recessive genes are eliminated more rapidly than harmful dominant genes. e. None of the above is true.arrow_forwardConsider the trait in Figure 22.5a. Which statement about this trait is correct? Please choose the best option. a) In humans, the trait cannot be explained by the theory of evolution by natural selection. b. In humans, the trait improves the biological fitness of individuals. c. In humans, the trait is similar to a functional version of the trait in closely related species. d. Humans lack vestigial traitsarrow_forward
- What is meant by the following statement? "When mutation is random, natural selection is not." Mark all correct answers Group of answer choices A. A mutation is caused by changes in the environment. B. Natural selection can favor some mutations and not others. C.Mutations for advantageous traits are more likely to be passed on to the next generation. D.Selection can change depending on the environment.arrow_forwardNatural selection works on a. individuals. b. genes. c. populations. d. species. harrow_forwardNatural selection occurs when which of the following conditions are met? Group of answer choices a.Variations between individual organisms lead to differential survival chances. b.The conditions in an ecosystem support a wide range of living organisms c.Individual organisms depend on each other to obtain available resources. d. Habitat and nutrient resources in an area are plentiful over a long period of time.arrow_forward
- Which of the following conclusions are MOST likely to be supported by genetic evidence? A. Some modern-day organisms did not exist in the past. B. Some organisms found in the fossil record do not currently exist. C. Environmental change affected the fitness of individuals differently based on their traits. D. Some disease-causing traits may remain in a population because their alleles provide an advantage to heterozygotes.arrow_forwardWhich of the following statements does NOT agree with the tenets of Darwin's theory of evolution by means of natural selection? O A. The phenotypes of individuals in a population will differ and, in some cases, these differences are the result of traits passed down from parent to offspring. B. Phenotypes become more common over time if individuals with those phenotypes have higher reproductive success. O C. The fitness of an individual with a particular phenotype is independent of the environmental conditions it experiences. O D. Resources limit the total number of individuals in a population.arrow_forwardWhich of the following statements is true? A. Evolution involves a change in gene frequencies from one generation to the next B. Natural selection is the only mechanism through which animals evolve to become adapted to their environment C. Genetic drift results in evolution but not adaptation to the environment D. For natural selection to occur, differences in genetically-based traits must result in differential reproductive success E. All of the above are truearrow_forward
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