Question 1

Human biology

Accepted Answer

A)   is no longer affected by evolutionary processes.
B)   remains the best explanation for genetic evolution.
C)   is all in the genes.
D)   is 75-percent genotype and 25-percent phenotype.
E)   is not set at birth but has considerable plasticity.F) B) and D)
G) A) and E)

Question 2

How is evolution defined by population geneticists? What are the major mechanisms of genetic evolution?

Accepted Answer

Evolution, as defined by population gene...

Question 3

Which of the following statements about individuals with the HbS allele in the homozygous form is true?

Accepted Answer

A)   They lack the capacity to digest lactose.
B)   They usually develop fatal cases of sickle-cell anemia.
C)   They rarely develop any form of sickle-cell anemia before reaching reproductive age.
D)   They are usually found in temperate regions of the world.
E)   They always develop fatal cases of sickle-cell anemia late in life.F) C) and D)
G) B) and D)

Question 4

Uniformitarianism states that the natural forces at work today have more or less been the same as those at work in the past.

Accepted Answer

A) True 
 B)False

Question 5

We have learned that reliance on culture has increased in the course of human history. Yet the fact and mechanisms of evolution remain a key part of our human present and future because

Accepted Answer

A)   the pace of evolution has been continuously increasing, since human cultural solutions have not been able to keep up with environmental changes such as global warming.
B)   they determine, at the genetic level, our phenotype.
C)   they provide the clues to building a better human race by promoting directed speciation.
D)   people haven't stopped adapting biologically.
E)   they continue to justify anthropology's biocultural perspective.F) B) and E)
G) A) and B)

Question 6

Why is the difference between microevolution and macroevolution hard to distinguish?

Accepted Answer

The distinction between microevolution a...

Question 7

Natural selection is the only mechanism driving genetic evolution.

Accepted Answer

A) True 
 B)False

Question 8

The example of the sickle-cell allele demonstrates a key aspect of evolution through natural selection, in that

Accepted Answer

A)   adaptation and fitness are in relation to the individual organism, not the general population.
B)   human populations in the tropics are the most susceptible to random changes caused by natural selection.
C)   natural selection increases the variety in a population upon which subsequent natural selective processes can act.
D)   adaptation and fitness are in relation to specific environments; traits are not universally adaptive or maladaptive.
E)   although natural selection usually acts upon the phenotype, it can sometimes act upon the genotype.F) C) and E)
G) A) and C)

Question 9

Intelligent design explains some biological facts that evolution cannot explain.

Accepted Answer

A) True 
 B)False

Question 10

Genetic evolution involves changes in gene frequencies between generations within a given breeding population.

Accepted Answer

A) True 
 B)False

Question 11

What is the term for the belief that explanations for past events should be sought in ordinary forces that are at work today?

Accepted Answer

A)   uniformitarianism
B)   speciation
C)   creationism
D)   recombination
E)   catastrophismF) A) and E)
G) A) and D) A

Question 12

Mendelian genetics studies the ways in which gene frequencies vary in communities from generation to generation.

Accepted Answer

A) True 
 B)False

Question 13

Microevolution refers to small-scale change in allele frequencies over generations without speciation.

Accepted Answer

A) True 
 B)False

Question 14

What do gene flow and interbreeding act against?

Accepted Answer

A)   migration
B)   speciation
C)   natural selection
D)   mutations
E)   balanced polymorphismsF) C) and D)
G) B) and D)

Question 15

Globalization remains an important factor in the spread and mutation of disease in today's world.

Accepted Answer

A) True 
 B)False

Question 16

Natural selection is the process by which the forms most fit to survive and reproduce in a given environment do so in greater numbers than others in the same population. But more than survival of the fittest, natural selection is the natural process that leads to

Accepted Answer

A)   the toughest members of their population having the longest life span.
B)   differential reproductive success.
C)   the most fit members collecting the most resources from the environment.
D)   the survival of those members of their population that practice true altruism.
E)   survival success in any environment.F) B) and E)
G) B) and C)

Question 17

Mutations are the most important source of variety on which natural selection depends and operates. There are two forms of mutations,

Accepted Answer

A)   both discovered by Mendel.
B)   cancer-causing mutations and chromosomal rearrangement.
C)   which occur only during the development of an individual.
D)   called base substitution mutation and chromosomal rearrangement.
E)   which always result in phenotypic change.F) A) and E)
G) A) and C)

Question 18

Mitosis is the special process by which sex cells are produced.

Accepted Answer

A) True 
 B)False

Question 19

Identify and discuss the genetic sources of variety on which natural selection may operate.

Accepted Answer

The genetic sources of variety on which natural selection may operate include mutations, genetic recombination, and gene flow.

Mutations are changes in the DNA sequence that can create new genetic variation. These can occur spontaneously or be induced by environmental factors such as radiation or chemicals.

Genetic recombination occurs during sexual reproduction when genetic material from two parents is combined to create a new combination of genes in the offspring. This process can lead to new genetic combinations and increased genetic diversity within a population.

Gene flow refers to the movement of genes between populations through migration and interbreeding. This can introduce new genetic variation into a population and prevent genetic isolation.

These genetic sources of variety provide the raw material for natural selection to act upon. Natural selection is the process by which certain traits become more or less common in a population based on their ability to help individuals survive and reproduce in their environment. By acting on the genetic variation present in a population, natural selection can lead to the evolution of new traits and the adaptation of populations to their environments.

Question 20

Which of the following does NOT seek to explain the origin of species by referring to an outside agent?

Accepted Answer

A)   evolution
B)   catastrophism
C)   creationism
D)   extraterrestrial seeding
E)   intelligent designF) None of the above
G) B) and D) A

Exam 5: Evolution and Genetics

Human biology

Correct Answer
verified

How is evolution defined by population geneticists? What are the major mechanisms of genetic evolution?

Correct Answer
Answered by ExamLex AI
Evolution, as defined by population gene...
View Answer

Which of the following statements about individuals with the Hb^S allele in the homozygous form is true?

Correct Answer
verified

Uniformitarianism states that the natural forces at work today have more or less been the same as those at work in the past.

Correct Answer
verified

We have learned that reliance on culture has increased in the course of human history. Yet the fact and mechanisms of evolution remain a key part of our human present and future because

Correct Answer
verified

Why is the difference between microevolution and macroevolution hard to distinguish?

Correct Answer
Answered by ExamLex AI
The distinction between microevolution a...
View Answer

Natural selection is the only mechanism driving genetic evolution.

Correct Answer
verified

The example of the sickle-cell allele demonstrates a key aspect of evolution through natural selection, in that

Correct Answer
verified

Intelligent design explains some biological facts that evolution cannot explain.

Correct Answer
verified

Genetic evolution involves changes in gene frequencies between generations within a given breeding population.

Correct Answer
verified

What is the term for the belief that explanations for past events should be sought in ordinary forces that are at work today?

Correct Answer
verified
A

Mendelian genetics studies the ways in which gene frequencies vary in communities from generation to generation.

Correct Answer
verified

Microevolution refers to small-scale change in allele frequencies over generations without speciation.

Correct Answer
verified

What do gene flow and interbreeding act against?

Correct Answer
verified

Globalization remains an important factor in the spread and mutation of disease in today's world.

Correct Answer
verified

Natural selection is the process by which the forms most fit to survive and reproduce in a given environment do so in greater numbers than others in the same population. But more than survival of the fittest, natural selection is the natural process that leads to

Correct Answer
verified

Mutations are the most important source of variety on which natural selection depends and operates. There are two forms of mutations,

Correct Answer
verified

Mitosis is the special process by which sex cells are produced.

Correct Answer
verified

Identify and discuss the genetic sources of variety on which natural selection may operate.

Which of the following does NOT seek to explain the origin of species by referring to an outside agent?

Correct Answer
verified
A

Exam 5: Evolution and Genetics

Human biology

Correct AnswerverifiedShow Answer

How is evolution defined by population geneticists? What are the major mechanisms of genetic evolution?

Correct AnswerAnswered by ExamLex AIEvolution, as defined by population gene...View AnswerShow Answer

Which of the following statements about individuals with the HbS allele in the homozygous form is true?

Correct AnswerverifiedShow Answer

Uniformitarianism states that the natural forces at work today have more or less been the same as those at work in the past.

Correct AnswerverifiedShow Answer

We have learned that reliance on culture has increased in the course of human history. Yet the fact and mechanisms of evolution remain a key part of our human present and future because

Correct AnswerverifiedShow Answer

Why is the difference between microevolution and macroevolution hard to distinguish?

Correct AnswerAnswered by ExamLex AIThe distinction between microevolution a...View AnswerShow Answer

Natural selection is the only mechanism driving genetic evolution.

Correct AnswerverifiedShow Answer

The example of the sickle-cell allele demonstrates a key aspect of evolution through natural selection, in that

Correct AnswerverifiedShow Answer

Intelligent design explains some biological facts that evolution cannot explain.

Correct AnswerverifiedShow Answer

Genetic evolution involves changes in gene frequencies between generations within a given breeding population.

Correct AnswerverifiedShow Answer

What is the term for the belief that explanations for past events should be sought in ordinary forces that are at work today?

Correct AnswerverifiedA

Mendelian genetics studies the ways in which gene frequencies vary in communities from generation to generation.

Correct AnswerverifiedShow Answer

Microevolution refers to small-scale change in allele frequencies over generations without speciation.

Correct AnswerverifiedShow Answer

What do gene flow and interbreeding act against?

Correct AnswerverifiedShow Answer

Globalization remains an important factor in the spread and mutation of disease in today's world.

Correct AnswerverifiedShow Answer

Natural selection is the process by which the forms most fit to survive and reproduce in a given environment do so in greater numbers than others in the same population. But more than survival of the fittest, natural selection is the natural process that leads to

Correct AnswerverifiedShow Answer

Mutations are the most important source of variety on which natural selection depends and operates. There are two forms of mutations,

Correct AnswerverifiedShow Answer

Mitosis is the special process by which sex cells are produced.

Correct AnswerverifiedShow Answer

Identify and discuss the genetic sources of variety on which natural selection may operate.

Which of the following does NOT seek to explain the origin of species by referring to an outside agent?

Correct AnswerverifiedA

Correct Answer
verified

Correct Answer
Answered by ExamLex AI
Evolution, as defined by population gene...
View Answer

Which of the following statements about individuals with the Hb^S allele in the homozygous form is true?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
Answered by ExamLex AI
The distinction between microevolution a...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
A

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
A