Life in the Universe (4th Edition)
4th Edition
ISBN: 9780134089089
Author: Jeffrey O. Bennett, Seth Shostak
Publisher: PEARSON
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Textbook Question
Chapter 5, Problem 41IF
Genetic Variation. One of the underlying facts (Fact 2 on p. 160) that explains natural selection is that individuals in a population of any species vary in many heritable traits. Based on what you have learned about the molecular basis of evolution, explain why individuals of the same species are not expected to be genetically identical.
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Chapter 5 Solutions
Life in the Universe (4th Edition)
Ch. 5 - Briefly describe the six key properties that...Ch. 5 - What is natural selection? Summarize the logic by...Ch. 5 - Briefly describe the evidence that points to a...Ch. 5 - Why do we say that living cells are carbon-based?...Ch. 5 - Briefly describe each of the four main classes of...Ch. 5 - Prob. 6RQCh. 5 - What are the three domains of life? Which domain...Ch. 5 - What do we mean by the tree of life? List three...Ch. 5 - What is metabolism, and what are the two basic...Ch. 5 - Why is water so important to life on Earth? List...
Ch. 5 - Describe the double helix structure of DNA. How...Ch. 5 - What is a gene? A genome? The genetic code?Ch. 5 - What are mutations, and what effects can they...Ch. 5 - What are extremophiles? Give several examples of...Ch. 5 - Prob. 15RQCh. 5 - Explain how evolution exhibits each of the three...Ch. 5 - Suppose we found an organism on Earth with the...Ch. 5 - Suppose we found an organism on Earth with the...Ch. 5 - Suppose we found an organism on Earth with the...Ch. 5 - Suppose we found an organism on Earth with the...Ch. 5 - Suppose we found an organism on Earth with the...Ch. 5 - Suppose we found an organism on Earth with the...Ch. 5 - Suppose we found an organism on Earth with the...Ch. 5 - Suppose we found an organism on Earth with the...Ch. 5 - Suppose we found an organism on Earth with the...Ch. 5 - Suppose we found an organism on Earth with the...Ch. 5 - Choose the best answer to each of the following....Ch. 5 - Choose the best answer to each of the following....Ch. 5 - Choose the best answer to each of the following....Ch. 5 - An organisms heredity is encoded in (a) DNA; (b)...Ch. 5 - Prob. 31TYUCh. 5 - Which of the following is not a source of energy...Ch. 5 - People belong to domain (a) eukarya; (b) archaea;...Ch. 5 - Which of the following mutations would you expect...Ch. 5 - Generally speaking, an extremophile is an organism...Ch. 5 - Based on what you have learned in this chapter, it...Ch. 5 - The History of Evolution. Many people assume that...Ch. 5 - Prob. 38POSCh. 5 - Rock Life? How do you know that a rock is not...Ch. 5 - Genetic Variation. One of the underlying facts...Ch. 5 - Artificial Selection. Suppose you lived hundreds...Ch. 5 - Prob. 43IFCh. 5 - Dominant Life. While most of us tend to think of...Ch. 5 - The Human Power to Destroy. We may have the...Ch. 5 - The Search for Life. Based on what you have...Ch. 5 - Prob. 47IFCh. 5 - Atomic Numbers in Life. A typical bacterium has a...Ch. 5 - Oxygen Atoms in People. Figure 5.6 shows that...Ch. 5 - Cellular Energy. A typical eukaryotic cell, such...Ch. 5 - The Genetic Code. Suppose that, as evidence...Ch. 5 - Science and Religion. Science and religion are...Ch. 5 - Computer Life. Although scientists have already...Ch. 5 - Genetic Engineering and Future Evolution. For...Ch. 5 - Prob. 55IF
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- In this chapter, we identify these characteristic properties of life: life extracts energy from its environment, and has a means of encoding and replicating information in order to make faithful copies of itself. Does this definition fully capture what we think of as “life”? How might our definition be biased by our terrestrial environment?arrow_forwardDescribe an example of natural selection acting on new DNA patterns to select the most advantageous characteristics.arrow_forwardWhy are we limited to finding life on planets orbiting other stars to situations where the biosphere has created planet-scale changes?arrow_forward
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