Question 1

You notice that some squirrels in your neighborhood have a much darker coat color than most of the other squirrels. Is this darker color an adaptation?

Accepted Answer

A)  Yes, all variations are adaptations. 
B)  No, adaptations are traits developed when they're needed to help an organism survive. 
C)  You can't know unless you can know the coat color of the dark squirrel's parents. 
D)  The trait is only an adaptation if it gives the squirrels an advantage in their habitat. 
A)  Yes, all variations are adaptations. 
B)  No, adaptations are traits developed when they're needed to help an organism survive. 
C)  You can't know unless you can know the coat color of the dark squirrel's parents. 
D)  The trait is only an adaptation if it gives the squirrels an advantage in their habitat.

Question 2

After a rapid change in climate, one population of bird quickly adapts to the change, but others in the area do not. What could you conclude about the quickly adapting population?

Accepted Answer

A)  They had a greater need to evolve than the other population. 
B)  They already had some alleles in their genome that were adaptive in the new environment. 
C)  They reproduced more slowly than the non-adapting population. 
D)  They had a higher rate of mutation than the other population. 
A)  They had a greater need to evolve than the other population. 
B)  They already had some alleles in their genome that were adaptive in the new environment. 
C)  They reproduced more slowly than the non-adapting population. 
D)  They had a higher rate of mutation than the other population.

Question 3

What is combination drug therapy?

Accepted Answer

A)  a succession of drugs to combat an infection-as the infecting microorganism becomes resistant to one drug, the patient is put on another 
B)  a mixture of drugs and homeopathic medications 
C)  a mixture of several different kinds of drugs given simultaneously 
D)  one drug that has a combination of effects 
A)  a succession of drugs to combat an infection-as the infecting microorganism becomes resistant to one drug, the patient is put on another 
B)  a mixture of drugs and homeopathic medications 
C)  a mixture of several different kinds of drugs given simultaneously 
D)  one drug that has a combination of effects

Question 4

What is the primary source for new, unique genes in a population?

Accepted Answer

A)  mutation 
B)  natural selection 
C)  artificial selection 
D)  crossing over 
A)  mutation 
B)  natural selection 
C)  artificial selection 
D)  crossing over

Question 5

A trait that confers ________ in one environment might make an organism less able to survive and reproduce in another environment.

Accepted Answer

A)  selection 
B)  fitness 
C)  adaptation 
D)  alleles 
A)  selection 
B)  fitness 
C)  adaptation 
D)  alleles

Question 6

Which situation is an example of diversifying selection?

Accepted Answer

A)  A population of moths with white and grey forms lives in a forest containing trees with light and dark bark. 
B)  Because bees prefer dark blue flowers, this color gradually becomes more dominant in a population of plants with a color ranging from light blue to dark blue. 
C)  A population of plants develops all orange fruit instead of a mixture of yellow, red, and orange fruit, due to animals showing a preference for orange fruit. 
D)  Wild cat populations gradually develop spots that allow them to be camouflaged in the dark forest. 
A)  A population of moths with white and grey forms lives in a forest containing trees with light and dark bark. 
B)  Because bees prefer dark blue flowers, this color gradually becomes more dominant in a population of plants with a color ranging from light blue to dark blue. 
C)  A population of plants develops all orange fruit instead of a mixture of yellow, red, and orange fruit, due to animals showing a preference for orange fruit. 
D)  Wild cat populations gradually develop spots that allow them to be camouflaged in the dark forest.

Question 7

In a population, which individuals are most likely to survive and reproduce?

Accepted Answer

A)  the individuals who are best adapted to the environment 
B)  the largest individuals in the group 
C)  the individuals who can catch the most prey 
D)  the individuals who grow the most rapidly 
A)  the individuals who are best adapted to the environment 
B)  the largest individuals in the group 
C)  the individuals who can catch the most prey 
D)  the individuals who grow the most rapidly

Question 8

Which description applies to individuals who are well adapted for a particular environment?

Accepted Answer

A)  They may or may not be equally fit in another environment. 
B)  They are the best fit for all other environments. 
C)  They are at a disadvantage in other environments. 
D)  They will mutate to become fit in other environments. 
A)  They may or may not be equally fit in another environment. 
B)  They are the best fit for all other environments. 
C)  They are at a disadvantage in other environments. 
D)  They will mutate to become fit in other environments.

Question 9

When a population undergoes strong selection, what is most likely to happen to it?

Accepted Answer

A)  The most common type of organism is replaced with a different type. 
B)  Variation increases in the population. 
C)  New mutations will form more frequently. 
D)  The number of individuals in the population will rapidly increase. 
A)  The most common type of organism is replaced with a different type. 
B)  Variation increases in the population. 
C)  New mutations will form more frequently. 
D)  The number of individuals in the population will rapidly increase.

Question 10

What would happen if a mutation created a new allele that decreased fitness?

Accepted Answer

A)  The new allele would spread through the population and decrease the fitness of that population. 
B)  The new allele would decrease the fitness of the individual that possessed it, and that individual would have few or no offspring. 
C)  The new allele would have to change back to an allele of higher fitness so the possessor of that allele could maintain its fitness. 
D)  The individual with the new allele would wait for an environmental change so that its fitness would increase again. 
A)  The new allele would spread through the population and decrease the fitness of that population. 
B)  The new allele would decrease the fitness of the individual that possessed it, and that individual would have few or no offspring. 
C)  The new allele would have to change back to an allele of higher fitness so the possessor of that allele could maintain its fitness. 
D)  The individual with the new allele would wait for an environmental change so that its fitness would increase again.

You notice that some squirrels in your neighborhood have a much darker coat color than most of the other squirrels. Is this darker color an adaptation?

After a rapid change in climate, one population of bird quickly adapts to the change, but others in the area do not. What could you conclude about the quickly adapting population?

What is combination drug therapy?

What is the primary source for new, unique genes in a population?

A trait that confers ________ in one environment might make an organism less able to survive and reproduce in another environment.

Which situation is an example of diversifying selection?

In a population, which individuals are most likely to survive and reproduce?

Which description applies to individuals who are well adapted for a particular environment?

When a population undergoes strong selection, what is most likely to happen to it?

What would happen if a mutation created a new allele that decreased fitness?

Can Science Cure the Common Cold Introduction to the Scientific Method

Science Fiction, Bad Science, and Pseudoscience:

Is It Possible to Supplement Your Way to Better Performance and Health

Body Weight and Health: Enzymes, Metabolism, and Cellular Respiration

Life in the Greenhouse: Photosynthesis and Climate Change

Cancer: DNA Synthesis, Mitosis, and Meiosis

Are You Only As Smart As Your Genes Mendelian and Quantitative Genetics

DNA Detective: Complex Patterns of Inheritance and Dna Profiling

Genetically Modified Organisms: Gene Expression, Mutation,

Where Did We Come From the Evidence for Evolution

Who Am I Species and Races

The Greatest Species on Earth Biodiversity and Classification

Is the Human Population Too Large Population Ecology

Conserving Biodiversity: Community and Ecosystem Ecology

Where Do You Live Climate and Biomes

Organ Donation: Tissues and Organs

Binge Drinking: the Digestive and Urinary Systems

Clearing the Air: Respiratory and Cardiovascular Systems

Vaccination: Protection and Prevention or Peril Immune System,

Human Sex Differences: Endocrine, Skeletal, and Muscular Systems

Is There Something in the Water Reproductive and Developmental Biology

Study Drugs: Brain Boost or Brain Drain Brain Structure and Function

Feeding the World: Plant Structure and Growth

Growing a Green Thumb: Plant Physiology

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Exam 11: An Evolving Enemy: Natural Selection

You notice that some squirrels in your neighborhood have a much darker coat color than most of the other squirrels. Is this darker color an adaptation?

After a rapid change in climate, one population of bird quickly adapts to the change, but others in the area do not. What could you conclude about the quickly adapting population?

What is combination drug therapy?

What is the primary source for new, unique genes in a population?

A trait that confers ________ in one environment might make an organism less able to survive and reproduce in another environment.

Which situation is an example of diversifying selection?

In a population, which individuals are most likely to survive and reproduce?

Which description applies to individuals who are well adapted for a particular environment?

When a population undergoes strong selection, what is most likely to happen to it?

What would happen if a mutation created a new allele that decreased fitness?

Can Science Cure the Common Cold Introduction to the Scientific Method

Science Fiction, Bad Science, and Pseudoscience:

Is It Possible to Supplement Your Way to Better Performance and Health

Body Weight and Health: Enzymes, Metabolism, and Cellular Respiration

Life in the Greenhouse: Photosynthesis and Climate Change

Cancer: DNA Synthesis, Mitosis, and Meiosis

Are You Only As Smart As Your Genes Mendelian and Quantitative Genetics

DNA Detective: Complex Patterns of Inheritance and Dna Profiling

Genetically Modified Organisms: Gene Expression, Mutation,

Where Did We Come From the Evidence for Evolution

Who Am I Species and Races

The Greatest Species on Earth Biodiversity and Classification

Is the Human Population Too Large Population Ecology

Conserving Biodiversity: Community and Ecosystem Ecology

Where Do You Live Climate and Biomes

Organ Donation: Tissues and Organs

Binge Drinking: the Digestive and Urinary Systems

Clearing the Air: Respiratory and Cardiovascular Systems

Vaccination: Protection and Prevention or Peril Immune System,

Human Sex Differences: Endocrine, Skeletal, and Muscular Systems

Is There Something in the Water Reproductive and Developmental Biology

Study Drugs: Brain Boost or Brain Drain Brain Structure and Function

Feeding the World: Plant Structure and Growth

Growing a Green Thumb: Plant Physiology

Filters