BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Chapter 17, Problem 2SA
Summary Introduction
Introduction:
Evolution refers to the natural phenomenon in which living organisms modify and evolve themselves according to their needs and changing environment. Evolution in a proper manner helps the species to continue in the living world by giving better survival chances.
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Check out a sample textbook solutionStudents have asked these similar questions
Which of the four evolutionary mechanisms make a population better adapted to its environment?
A. Migration
B. Genetic drift
C. Mutations
D. Natural selection. 
Which one of the four forces of evolution has the smallest effect on changing allele frequencies?
a.
Drift
b.
Gene flow
c.
Mutation
d.
Selection
Which of the forces is the ONLY way that new genetic diversity can be produced in a species?
A.
Mutation
B.
Gene Flow
C.
Natural Selection
D.
Genetic Drift
Chapter 17 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Ch. 17 - _________is the original source of new alleles. a....Ch. 17 - Prob. 2SACh. 17 - Match the modes of natural selection with their...Ch. 17 - Prob. 4SACh. 17 - The persistence of the sickle allele at high...Ch. 17 - Prob. 6SACh. 17 - Prob. 7SACh. 17 - Which of the following is not part of how we...Ch. 17 - Prob. 9SACh. 17 - Prob. 10SA
Ch. 17 - Prob. 11SACh. 17 - Prob. 12SACh. 17 - In evolutionary trees, each node represents an...Ch. 17 - Match the evolutionary concepts. ____gene flow a....Ch. 17 - The evolution of wings helped the insect clade to...Ch. 17 - Species have traditionally been characterized as...Ch. 17 - Rama the cama, a llama-camel hybrid, was born in...Ch. 17 - Two species of antelope, one from Africa, the...Ch. 17 - Prob. 4CT
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- What is the term for organisms producing different phenotypes due to differences in the environment? a. Genetic variation b. Additive variation c. Phenotypic plasticity d. Reaction normarrow_forwardWhat is the greatest source of genetic variation in plant and animal populations? a. Geographic variation b. Recessive masking in heterozygotes c. Selection d. Sexual reproductionarrow_forwardWhich is required for a population to evolve?a. genetic diversity c. gene flowb. selection pressure d. none of the abovearrow_forward
- what has to happen successfully for evolution by natural selection to take place? a. Mutation b. Reproduction c. Migration d. Genetic driftarrow_forwardWhat is an example of neutral evolution in humans? A. Eye Color B. Skin Color C. Blood Types D. Humans do not have any traits that undergo neutral evolutionarrow_forwardIs it better for an organism to maximize their direct fitness or their indirect fitness? a. Direct Fitness b. Indirect Fitness c. Trick question. Neither Direct or Indirect Fitness matter in evolution.arrow_forward
- What 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_forwardWhich term can most accurately be used to describe evolutionary change that leads to speciation? A. microevolution b. macroevolution c. sexual selection d. natural selection e. reproductive isolationarrow_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_forward
- What branch of biology deals with the genetic makeup of populations? A. cytology B. ecology C. Mendelian genetics D. population genetics E. population ecologyarrow_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_forwardWhat kind of trait is important to cladistics? a. shared derived traits b. shared ancestral traits c. analogous traits d. parsimonious traitsarrow_forward
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