Biology: The Unity and Diversity of Life (Looseleaf)
15th Edition
ISBN: 9781337408417
Author: STARR
Publisher: CENGAGE L
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Textbook Question
Chapter 17, Problem 9SQ
Which is required for a population to evolve?
- a. genetic diversity
- b. selection pressure
- c. gene flow
- d. none of the above
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Which is required for a population to evolve?a. genetic diversity c. gene flowb. selection pressure d. none of the above
Which of the forces is the ONLY way that new genetic diversity can be produced in a species?
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Mutation
B.
Gene Flow
C.
Natural Selection
D.
Genetic Drift
What is the term for organisms producing different phenotypes due to differences in the environment?
a.
Genetic variation
b.
Additive variation
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Phenotypic plasticity
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Reaction norm
Chapter 17 Solutions
Biology: The Unity and Diversity of Life (Looseleaf)
Ch. 17 - Prob. 1DAACh. 17 - Prob. 2DAACh. 17 - Prob. 3DAACh. 17 - Prob. 4DAACh. 17 - Prob. 1SQCh. 17 - A neutral mutation _______ . a. has a pH of 7.0 b....Ch. 17 - Change in allele frequency of a population is...Ch. 17 - A wild population of pea plants has two alleles...Ch. 17 - Which of the following is not part of how we...Ch. 17 - Prob. 6SQ
Ch. 17 - The persistence of sickle-cell anemia in a...Ch. 17 - ___ tends to keep populations of a species similar...Ch. 17 - Which is required for a population to evolve? a....Ch. 17 - Prob. 10SQCh. 17 - After fire devastates all of the trees in a wide...Ch. 17 - True or false? Inbreeding can increase the...Ch. 17 - The difference between sympatric and parapatric...Ch. 17 - Prob. 14SQCh. 17 - Match the evolution concepts. ____ gene flow a....Ch. 17 - Species have traditionally been characterized as...Ch. 17 - Rama the cama, a llama-camel hybrid, was born in...Ch. 17 - Two species or antelope, one from Africa, the...Ch. 17 - Prob. 4CTCh. 17 - About 70 percent of flowering plants are...
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- what has to happen successfully for evolution by natural selection to take place? a. Mutation b. Reproduction c. Migration d. Genetic driftarrow_forwardWhich must exist in a population before natural selection can act upon that population? A. Genetic variation among individuals B. Variation among individuals caused by environmental factors C. Sexual reproduction D. Three of the responses are correctarrow_forwardWhat is an example of neutral evolution in humans? A. Eye Color B. Humans do not have any traits that undergo neutral evolution C. Skin Color D. Blood Typesarrow_forward
- Which is the most important factor affecting the change in allele frequency from one population to another? A. Reproductive isolationB. Disruptive selectionC. Environmental factorsD. Genetic engineeringarrow_forwardWhich claim about natural selection is not true? A. Directional selection decreases genetic diversity within a population B. Balancing selection (heterozygote advantage) maintains genetic diversity within a population C. Negative Frequency-Dependent selection maintains genetic diversity within a population D. Natural Selection always has a greater evolutionary effect in small populations than it does in large populationsarrow_forwardHumans are able to cause organisms to evolve through whichmechanism?a. artificial selectionb. natural selectionc. fitnessd. paleontologye. uniformitarianismarrow_forward
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