Biology
11th Edition
ISBN: 9781259188138
Author: Peter H Raven, George B Johnson Professor, Kenneth A. Mason Dr. Ph.D., Jonathan Losos Dr., Susan Singer
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 1, Problem 7A
Evolutionary conservation occurs when a characteristic is
a. important to the life of the organism.
b. not influenced by evolution.
c. no longer functionally important.
d. found in more primitive organisms.
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What 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 phenotypes
Evolution is one of the major unifying concepts of modern biology. Explain the mechanisms that lead to evolutionary change.
If two different organisms are closely related evolutionarily, then they will (a) be similar in size. (b) share a recent common ancestor. (c) have very different DNA sequences in their genes. (d) be randomly located throughout the world.
Chapter 1 Solutions
Biology
Ch. 1 - Prob. 1UCh. 1 - Prob. 2UCh. 1 - A hypothesis in biology is best described as a. a...Ch. 1 - Prob. 4UCh. 1 - The cell theory states that a. cells are small. b....Ch. 1 - The molecule DNA is important to biological...Ch. 1 - The organization of living systems is a. linear...Ch. 1 - The idea of evolution a. was original to Darwin....Ch. 1 - What is the significance of Pasteurs experiment to...Ch. 1 - Which of the following is NOT an example of...
Ch. 1 - How is the process of natural selection different...Ch. 1 - If you found a fossil for a modem organism next to...Ch. 1 - The theory of evolution by natural selection is a...Ch. 1 - In which domain of life would you find only...Ch. 1 - Evolutionary conservation occurs when a...Ch. 1 - Exobiology is the study of life on other planets....Ch. 1 - The classic experiment by Pasteur (figure 1.4)...
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- Evolution is based on which of the following concepts? (a) organisms share a common origin (b) over time, organisms have diverged from a common ancestor (c) an animals body parts can change over its lifetime, and these acquired changes are passed to the next generation (d) a and b (e) a, b, and carrow_forwardA major source of evidence for evolution is to be found in the comparative anatomy of organisms. Features that look different but have similar structural origin are calleda. homologous structures.b. analogous structures.c. vestigial structures.d. convergent structuresarrow_forwardHow does the study of the field of archaeology help one to study evolution? a. Look for patterns in evolution b. To study human emotions c. To study evidence of fossil records d. To understand Darwin's theory of evolutionarrow_forward
- With regard to biological evolution, which of the following statements is incorrect? Explain why.A. During its lifetime, an animal evolves to become better adaptedto its environment.B. The process of biological evolution has produced species thatare better adapted to their environments.C. When an animal is better adapted to its environment, the process of natural selection makes it more likely that the animalwill reproduce.arrow_forwardCreate an informative essay showcasing the importance of evolution in our lives. With the changes in the structure of living organisms like plants and animals, how did these changes help the community of living organisms? How will the evidences found by several scientists be of help to us and to other organisms as well?arrow_forwardThe definition of "lineage" is: Select one or more: a. the same as the Tree of Life b. a population of organisms captured at one specific time c. a series of ancestor and descendant lineages over time d. a character that has evolved over timearrow_forward
- Discuss whether changes to an organism's physical environment are likely to result in evolutionary change. Use examples to support your reasoning. Second, using at least two examples, explain how the process of evolution is revealed by the imperfections of living organismsarrow_forwardResearchers have found fossils of Eocene horse species in Colorado. Deeper deposits contain smaller species, and more recent deposits contain larger species. How does this observation support the theory of evolution? A. It provides evidence that species change over time. B. It does not support the theory of evolution. C. It shows that all species are related to each other. D. It proves that environments have changed over time. E. It suggests that species are unchanging and of recent origin.arrow_forwardThe most accurate definition of biological evolution from the following is... a. extinction and speciation b. the change in allele frequencies over time c. survival of the fittest d. the origin of new speciesarrow_forward
- Through______ , a body part of an ancestor is modified differently in different lines of descent. a. homologous evolution c. analogous evolution b. convergent evolution d. divergent evolutionarrow_forwardThe challenge in using sequence data to estimate the evolutionary tree for all living things is to find a gene that shows recognizable sequence similarities even between highly distantly related species . Which of the following should NOT be among the features of this gene? A. The gene subject to strong diversifying selection. B. It is present in all organisms. C. It encodes a product whose function is essential. D. The function of the gene must have remained the same in all organisms.arrow_forwardWhich of the following statements is inaccurate? Multiple choice (one answer is correct) a.The genetic variation that occurs in a population from mutation is non-random b.Natural selection is the only mechanism that consistently causes adaptive evolution c.Evidence demonstrates that whales evolved from land-dwelling organisms d.Natural selection acts on populationsarrow_forward
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