BIOLOGY: LIFE ON EARTH-W/MASTERING ACCE
2020th Edition
ISBN: 9780135686553
Author: Audesirk
Publisher: PEARSON
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Textbook Question
Chapter 15, Problem 1AC
In discussions of untapped human potential, it is commonly said that the average person uses only 10% of his or her brain. Is this conclusion likely to be correct? Explain your answer in terms of natural selection.
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Which of the following is NOT a characteristic of natural selection?
a) Variation exists among individuals in a population
b) Some individuals are better adapted to their environment than others
c) Organisms evolve to fit a predetermined goal or plan
d) The better-adapted individuals are more likely to survive and reproduce
In your own words, how does Genetic Variation support natural selection? Use at least 1 example from the Beaks of Finches lab in your answer.
During drought years on the Galapagos, small, easily eaten seeds become rare leaving only large, hard-cased seeds that only birds with large beaks can eat. If the drought persists for several years, then what should one expect to result from natural selection? Explain your reasoning based on the postulates of the Darvin natural selection theory.
Chapter 15 Solutions
BIOLOGY: LIFE ON EARTH-W/MASTERING ACCE
Ch. 15 - 1. Whale skeletons contain nonfunctional pelvic...Ch. 15 - 2. Darwin was influenced by Malthus's thinking...Ch. 15 - Prob. 3MCCh. 15 - Which of the following is NOT required for...Ch. 15 - 5. Which of the following is NOT evidence of...Ch. 15 - The flipper of a seal is homologous with the...Ch. 15 - The finding that all organisms share the same...Ch. 15 - Georges Cuvier espoused a concept called _______...Ch. 15 - 4. The process by which inherited characteristics...Ch. 15 - The process by which individuals with traits that...
Ch. 15 - Darwin's postulate 2 states that __________. The...Ch. 15 - Natural selection acts on individuals, but only...Ch. 15 - 2. Distinguish between catastrophism and...Ch. 15 - 3. Describe Lamarck’s theory of inheritance of...Ch. 15 - 4. What is natural selection? Describe how natural...Ch. 15 - 5. Describe how evolution occurs. In your...Ch. 15 - What is convergent evolution? Give an example.Ch. 15 - How do biochemistry and molecular genetics...Ch. 15 - Prob. 8RQCh. 15 - 1. In discussions of untapped human potential, it...Ch. 15 - 2. Does evolution through natural selection...
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- Natural selection makes an adaptive trait more common in a population. After many generations, will all individuals in the population have the same adaptive trait?arrow_forwardnatural selection is incorrectarrow_forwardIn your own words, how does Competition and selection support natural selection? Use at least 1 example from the Beaks of Finches lab in your answer.arrow_forward
- One of the lines of evidence that led Darwin to the theory of natural selection was his study of artificial selection. Plant breeders and pigeon breeders select offspring with specific traits in mind beforehand. a) However, since humans are an integral part of the natural world, do you think that artificial selection might be more appropriately termed “natural selection”? Why?arrow_forwardDarwin proposed natural selection as a mechanism for evolution. How is it similar to artificial selection? How is it different?For natural selection to work, there must be genetic variation within a population as well as mutations? Why must there be both?arrow_forwardExplain in your own words what natural selection is and how it works.arrow_forward
- 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_forwardNatural selection is dependent on several factors, including the ability a population to survive and reproduce within a particular environment. How are both of these factors modeled?arrow_forwardHow do Genetic Variation, Competition & selection, and Inheritance each support natural selection? Use at least 1 example from the Beaks of Finches lab in your answer for each.arrow_forward
- Evolution is sometimes characterized as “survival of the fittest.” Is this consistent with an evolutionary biologist’s definitions of fitness and natural selection? Is this a good way to think about evolution, or a poor one?arrow_forwardWhich of the following is not a trait on which natural selection can act? a size of ears b fur/hair color c broken bones d thickness of furarrow_forwardIs natural selection only a negative process that removes nonadapted and lesser adapted forms? Explain your answer.arrow_forward
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