Question 1

If the frequency of a recessive gene in a population under genetic equilibrium is 40 percent, in the next generation the frequency of that gene would be

Accepted Answer

A) 20 percent. 
B) 40 percent. 
C) 80 percent. 
D) 2pq. 
E) unpredictable. 
A) 20 percent. 
B) 40 percent. 
C) 80 percent. 
D) 2pq. 
E) unpredictable.

Question 2

Autopolyploids contain __________ the number of parental chromosomes and are usually artificially produced through the application of __________.

Accepted Answer

A) triple; colchicine 
B) double; heat 
C) double; colchicine 
D) triple; heat 
E) double; radiation 
A) triple; colchicine 
B) double; heat 
C) double; colchicine 
D) triple; heat 
E) double; radiation

Question 3

Which of the following is an example of random mating?

Accepted Answer

A) The largest and strongest males develop a harem. 
B) A female bird will mate only with males that perform the best courtship displays. 
C) Members of a sorority usually marry fraternity brothers. 
D) Some males mate with any female they encounter. 
E) Female birds of paradise select the most colorful males as mates. 
A) The largest and strongest males develop a harem. 
B) A female bird will mate only with males that perform the best courtship displays. 
C) Members of a sorority usually marry fraternity brothers. 
D) Some males mate with any female they encounter. 
E) Female birds of paradise select the most colorful males as mates.

Question 4

Genetic drift

Accepted Answer

A) leads to a loss of diversity in a population. 
B) requires small populations. 
C) occurs in populations with the founder effect. 
D) occurs following a bottleneck. 
E) fits all of these descriptions. 
A) leads to a loss of diversity in a population. 
B) requires small populations. 
C) occurs in populations with the founder effect. 
D) occurs following a bottleneck. 
E) fits all of these descriptions.

Question 5

New combinations of genes may be produced by

Accepted Answer

A) independent assortment. 
B) mutation. 
C) crossing over. 
D) sexual reproduction. 
E) all of these. 
A) independent assortment. 
B) mutation. 
C) crossing over. 
D) sexual reproduction. 
E) all of these.

Question 6

The black-bellied seedcrackers of Cameroon

Accepted Answer

A) have bills either 12 or 15 mm wide. 
B) use both hard and soft seeds during the wet season 
C) sustain intense competition for scarce seeds during times of drought. 
D) provide an example of disruptive selection. 
E) fit all of these descriptions. 
A) have bills either 12 or 15 mm wide. 
B) use both hard and soft seeds during the wet season 
C) sustain intense competition for scarce seeds during times of drought. 
D) provide an example of disruptive selection. 
E) fit all of these descriptions.

Question 7

Complete reproductive isolation is evidence that what has occurred?

Accepted Answer

A) extinction 
B) speciation 
C) polyploidy 
D) hybridization 
E) gene flow 
A) extinction 
B) speciation 
C) polyploidy 
D) hybridization 
E) gene flow

Question 8

Which of the following is a type of postzygotic reproductive isolating mechanism?

Accepted Answer

A) temporal isolation 
B) mechanical isolation 
C) behavioral isolation 
D) hybrid sterility 
E) all of these 
A) temporal isolation 
B) mechanical isolation 
C) behavioral isolation 
D) hybrid sterility 
E) all of these

Exam 18: Emergence of Evolutionary Thought

If the frequency of a recessive gene in a population under genetic equilibrium is 40 percent, in the next generation the frequency of that gene would be

Autopolyploids contain __________ the number of parental chromosomes and are usually artificially produced through the application of __________.

Which of the following is an example of random mating?

Genetic drift

New combinations of genes may be produced by

The black-bellied seedcrackers of Cameroon

Complete reproductive isolation is evidence that what has occurred?

Which of the following is a type of postzygotic reproductive isolating mechanism?

Invitation to Biology

Lifes Chemical Basis

Molecules of Life

Cell Structure and Function

A Closer Look at Cell Membranes

Ground Rules of Metabolism

Where It Startsphotosynthesis

Energy-Releasing Pathways

How Cells Reproduce

Meiosis and Sexual Reproduction

Observing Patterns in Inherited Traits

Chromosomes and Human Inheritance

Dna Structure and Function

From Dna to Protein

Controls Over Genes

Recombinant Dna and Genetic Engineering

The Macroevolutionary Puzzle

Organizing Information About Species

The Origin and Evolution of Life

Viruses and Prokaryotes

Protists the Simplest Eukaryotes

Plants

Fungi

Animals: the Invertebrates

Animal Evolution the Chordates

Human Evolution: a Case Study

Plant Tissues

Plant Nutrition and Transport

Plant Reproduction

Plant Growth and Development

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Protection, Support, and Movement

Circulation

Immunity

Respiration

Digestion and Human Nutrition

Maintaining the Internal Environment

Animal Reproductive Systems

Animal Development

Animal Behavior

Population Ecology

Community Structure and Biodiversity

Ecosystems

The Biosphere

Human Impacts on the Biosphere

Filters

Autopolyploids contain the number of parental chromosomes and are usually artificially produced through the application of .