Chapter 23: the Evolution of Populations
Biology, 7e (Campbell)
Chapter 23: The Evolution of Populations
Chapter Questions
1) What is the most important missing evidence or observation in Darwin's theory of 1859?
A) the source of genetic variation
B) evidence of the overproduction of offspring
C) evidence that some organisms became extinct
D) observation that variation is common in populations
E) observation that competition exists in populations
Answer: A
Topic: Concept 23.1
Skill: Knowledge
2) Which hypothesis of inheritance, common at Darwin's time, caused many to question the ability of natural selection to bring about adaptation in populations?
A) particulate hypothesis
B) blending hypothesis
C) chromosomal hypothesis
D) nucleic acid hypothesis
E) proofreading hypothesis
Answer: B
Topic: Concept 23.1
Skill: Knowledge
3) Which definition of evolution would have been most foreign to Charles Darwin during his lifetime?
A) change in gene frequency in gene pools
B) descent with modification
C) the gradual change of a population's heritable traits over generations
D) populations becoming better adapted to their environments over the course of generations
E) the appearance of new varieties and new species with the passage of time
Answer: A
Topic: Concept 23.1
Skill: Knowledge
4) Even in Darwin's time, the blending hypothesis was incompatible with observed facts. If the blending hypothesis were true, then what should one expect to observe over the course of generations?
A) Phenotypic polymorphisms should increase.
B) Genetic variation should increase.
C) Members of a breeding population should become more uniform in phenotype.
D) Neutral variation should decrease.
E) Genetic polymorphisms should increase.
Answer: C
Topic: Concepts 23.1, 23.4
Skill: Comprehension
5) What is true of the modern evolutionary synthesis?
A) It is about to be declared a scientific law.
B) It is nearing final completion.
C) It has not been able to improve upon Darwin's original ideas
Chapter 23: The Evolution of Populations
Chapter Questions
1) What is the most important missing evidence or observation in Darwin's theory of 1859?
A) the source of genetic variation
B) evidence of the overproduction of offspring
C) evidence that some organisms became extinct
D) observation that variation is common in populations
E) observation that competition exists in populations
Answer: A
Topic: Concept 23.1
Skill: Knowledge
2) Which hypothesis of inheritance, common at Darwin's time, caused many to question the ability of natural selection to bring about adaptation in populations?
A) particulate hypothesis
B) blending hypothesis
C) chromosomal hypothesis
D) nucleic acid hypothesis
E) proofreading hypothesis
Answer: B
Topic: Concept 23.1
Skill: Knowledge
3) Which definition of evolution would have been most foreign to Charles Darwin during his lifetime?
A) change in gene frequency in gene pools
B) descent with modification
C) the gradual change of a population's heritable traits over generations
D) populations becoming better adapted to their environments over the course of generations
E) the appearance of new varieties and new species with the passage of time
Answer: A
Topic: Concept 23.1
Skill: Knowledge
4) Even in Darwin's time, the blending hypothesis was incompatible with observed facts. If the blending hypothesis were true, then what should one expect to observe over the course of generations?
A) Phenotypic polymorphisms should increase.
B) Genetic variation should increase.
C) Members of a breeding population should become more uniform in phenotype.
D) Neutral variation should decrease.
E) Genetic polymorphisms should increase.
Answer: C
Topic: Concepts 23.1, 23.4
Skill: Comprehension
5) What is true of the modern evolutionary synthesis?
A) It is about to be declared a scientific law.
B) It is nearing final completion.
C) It has not been able to improve upon Darwin's original ideas