Question 1

Over time, average phenotypes become less common and the population becomes phenotypically more diverse as a result of _____________ selection.

Accepted Answer

A)  bimodal 
B)  directional 
C)  disruptive 
D)  stabilizing 
E)  disjointed 
A)  bimodal 
B)  directional 
C)  disruptive 
D)  stabilizing 
E)  disjointed

Question 2

Evolution can be defined as

Accepted Answer

A)  a process which favors the average phenotype within a population. 
B)  a process that increases the average size of individuals within a population. 
C)  a process of eliminating "bad" traits within a population. 
D)  a change in gene frequencies in a population. 
E)  the extent to which phenotypic variation is due to genetic variation. 
A)  a process which favors the average phenotype within a population. 
B)  a process that increases the average size of individuals within a population. 
C)  a process of eliminating "bad" traits within a population. 
D)  a change in gene frequencies in a population. 
E)  the extent to which phenotypic variation is due to genetic variation.

Question 3

The combination of genetics and environmental pressures can cause variations in phenotypes.

Accepted Answer

A) True 
 B)False

Question 4

The transplant experiment conducted on Potentilla glandulosa determined that morphological changes occurred, but no genetic changes occurred within the various experimental populations.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following are conditions necessary to maintain Hardy-Weinberg equilibrium?

Accepted Answer

A)  no mutations 
B)  large population 
C)  equal fitness 
D)  random mating 
E)  All of the choices are correct. 
A)  no mutations 
B)  large population 
C)  equal fitness 
D)  random mating 
E)  All of the choices are correct.

Question 6

Darwin is often considered the father of evolutionary thought. Which of the following terms is/are not part of Darwin's analysis?

Accepted Answer

A)  gene frequencies 
B)  natural selection 
C)  adaptation 
D)  fitness 
E)  None of the choices are correct. 
A)  gene frequencies 
B)  natural selection 
C)  adaptation 
D)  fitness 
E)  None of the choices are correct.

Question 7

A recent study of the finch
G. fortis on Santa Cruz Island showed that directional selection has resulted in larger beak size.

Accepted Answer

A) True 
 B)False

Question 8

Phenotypic changes are always reflections of genotypic changes.

Accepted Answer

A) True 
 B)False

Question 9

Evolution results from

Accepted Answer

A)  mutations. 
B)  natural selection. 
C)  genetic drift. 
D)  gene flow. 
E)  All of the choices are correct. 
A)  mutations. 
B)  natural selection. 
C)  genetic drift. 
D)  gene flow. 
E)  All of the choices are correct.

Question 10

Ecotypes are local populations within a species that are genetically and phenotypically distinct due in part to local environmental adaptation.

Accepted Answer

A) True 
 B)False

Question 11

Research on soapberry bugs (Jadera haematoloma) supports all of the following results except:

Accepted Answer

A)  the soapberry bugs underwent developmental changes without genetic changes. 
B)  beak length positively correlated with fruit diameter. 
C)  genetic differences were observed between the populations in study. 
D)  natural selection occurred. 
E)  soapberry bugs underwent developmental changes without genetic changes and beak length positively correlated with fruit diameter. 
A)  the soapberry bugs underwent developmental changes without genetic changes. 
B)  beak length positively correlated with fruit diameter. 
C)  genetic differences were observed between the populations in study. 
D)  natural selection occurred. 
E)  soapberry bugs underwent developmental changes without genetic changes and beak length positively correlated with fruit diameter.

Over time, average phenotypes become less common and the population becomes phenotypically more diverse as a result of _____________ selection.

Evolution can be defined as

The combination of genetics and environmental pressures can cause variations in phenotypes.

The transplant experiment conducted on Potentilla glandulosa determined that morphological changes occurred, but no genetic changes occurred within the various experimental populations.

Which of the following are conditions necessary to maintain Hardy-Weinberg equilibrium?

Darwin is often considered the father of evolutionary thought. Which of the following terms is/are not part of Darwin's analysis?

A recent study of the finch G. fortis on Santa Cruz Island showed that directional selection has resulted in larger beak size.

Phenotypic changes are always reflections of genotypic changes.

Evolution results from

Ecotypes are local populations within a species that are genetically and phenotypically distinct due in part to local environmental adaptation.

Research on soapberry bugs (Jadera haematoloma) supports all of the following results except:

Introduction to Ecology Historical Foundations and Developing Frontiers

Life on Land

Life in Water

Temperature Relations

Water Relations

Energy and Nutrient Relations

Socail Relations

Population Distribution and Abundance

Population Dynamics

Population Growth

Life Histories

Competition

Exploitative Interactions Predation, Herbivory, Parasitism, and Disease

Mutualism

Species Abundance and Diversity

Species Interactions and Community Structure

Primary Production and Energy Flow

Nutrient Cycling and Retention

Succession and Stability

Landscape Ecology

Geographic Ecology

Global Ecology

Filters

Exam 4: Population Genetics and Natural Selection

Over time, average phenotypes become less common and the population becomes phenotypically more diverse as a result of _____________ selection.

Evolution can be defined as

The combination of genetics and environmental pressures can cause variations in phenotypes.

The transplant experiment conducted on Potentilla glandulosa determined that morphological changes occurred, but no genetic changes occurred within the various experimental populations.

Which of the following are conditions necessary to maintain Hardy-Weinberg equilibrium?

Darwin is often considered the father of evolutionary thought. Which of the following terms is/are not part of Darwin's analysis?

A recent study of the finch G. fortis on Santa Cruz Island showed that directional selection has resulted in larger beak size.

Phenotypic changes are always reflections of genotypic changes.

Evolution results from

Ecotypes are local populations within a species that are genetically and phenotypically distinct due in part to local environmental adaptation.

Research on soapberry bugs (Jadera haematoloma) supports all of the following results except:

Introduction to Ecology Historical Foundations and Developing Frontiers

Life on Land

Life in Water

Temperature Relations

Water Relations

Energy and Nutrient Relations

Socail Relations

Population Distribution and Abundance

Population Dynamics

Population Growth

Life Histories

Competition

Exploitative Interactions Predation, Herbivory, Parasitism, and Disease

Mutualism

Species Abundance and Diversity

Species Interactions and Community Structure

Primary Production and Energy Flow

Nutrient Cycling and Retention

Succession and Stability

Landscape Ecology

Geographic Ecology

Global Ecology

Filters