Question 1

Which of the following describes mechanical reproductive isolation?

Accepted Answer

A)  two squirrel populations live on either side of a mountain range 
B)  two fly species have differently shaped genitals that prevent interspecies mating 
C)  two similar species of sunflowers bloom at different times of the year 
D)  individuals from two wildcat species produce infertile offspring when they mate 
A)  two squirrel populations live on either side of a mountain range 
B)  two fly species have differently shaped genitals that prevent interspecies mating 
C)  two similar species of sunflowers bloom at different times of the year 
D)  individuals from two wildcat species produce infertile offspring when they mate

Question 2

Which individuals have the greatest fitness in an area where malaria is common?

Accepted Answer

A)  Individuals of any genotype who become infected with malaria before the age of five. 
B)  Individuals homozygous for the sickle cell anemia allele. 
C)  Individuals homozygous for the normal globin allele. 
D)  Individuals heterozygous for the normal and sickle cell anemia alleles. 
A)  Individuals of any genotype who become infected with malaria before the age of five. 
B)  Individuals homozygous for the sickle cell anemia allele. 
C)  Individuals homozygous for the normal globin allele. 
D)  Individuals heterozygous for the normal and sickle cell anemia alleles.

Question 3

Alleles for other genetic diseases also provide protection against malaria when only one copy of the allele is present. In what cell type would you expect these genes to be active?

Accepted Answer

A)  liver cells 
B)  skin cells 
C)  red blood cells 
D)  lung cells 
A)  liver cells 
B)  skin cells 
C)  red blood cells 
D)  lung cells

Question 4

Evolution that occurs as a result of a dramatic reduction in population size is called

Accepted Answer

A)  founder effect. 
B)  genetic drift. 
C)  gene flow. 
D)  population bottleneck. 
A)  founder effect. 
B)  genetic drift. 
C)  gene flow. 
D)  population bottleneck.

Question 5

Where can you find the most genetically diverse populations of humans?

Accepted Answer

A)  Europe 
B)  Central America 
C)  Africa 
D)  Pacific Islands 
A)  Europe 
B)  Central America 
C)  Africa 
D)  Pacific Islands

Question 6

Closely related species of orchids never mate in the wild because they bloom at different times. This is an example of ________ reproductive isolation.

Accepted Answer

The answer of Closely related species of orchids never mate...

Which of the following describes mechanical reproductive isolation?

Which individuals have the greatest fitness in an area where malaria is common?

Alleles for other genetic diseases also provide protection against malaria when only one copy of the allele is present. In what cell type would you expect these genes to be active?

Evolution that occurs as a result of a dramatic reduction in population size is called

Where can you find the most genetically diverse populations of humans?

Closely related species of orchids never mate in the wild because they bloom at different times. This is an example of ________ reproductive isolation.

Can Science Cure the Common Cold? Introduction to the Scientific Method

Are We Alone in the Universe? Water, Biochemistry, and Cells

Is It Possible to Supplement Your Way to Better Health?

Fat: How Much is Right for You? Enzymes, Metabolism, and Cellular Respiration

Life in the Greenhouse: Photosynthesis and Global Warming

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 Fingerprinting

Genetically Modified Organisms: Gene Expression, Mutation, and Cloning

Where Did We Come From? The Evidence for Evolution

An Evolving Enemy: Natural Selection

Prospecting for Biological Gold: 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 Organs and Organ Systems

Clearing the Air: Respiratory Cardiovascular and Excretory Systems

Vaccinations: Protection and Prevention or Peril? Immune System

Sex Differences and Athleticism: Endocrine Skeletal and Muscular Systems

Is There Something in the Water? Reproductive and Developmental Biology

Attention Deficit Disorder: Brain Structure and Function

Feeding the World: Plant Structure and Growth

Growing a Green Thumb: Plant Physiology

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Exam 12: Who Am I? Species and Races

Which of the following describes mechanical reproductive isolation?

Which individuals have the greatest fitness in an area where malaria is common?

Alleles for other genetic diseases also provide protection against malaria when only one copy of the allele is present. In what cell type would you expect these genes to be active?

Evolution that occurs as a result of a dramatic reduction in population size is called

Where can you find the most genetically diverse populations of humans?

Closely related species of orchids never mate in the wild because they bloom at different times. This is an example of ________ reproductive isolation.

Can Science Cure the Common Cold? Introduction to the Scientific Method

Are We Alone in the Universe? Water, Biochemistry, and Cells

Is It Possible to Supplement Your Way to Better Health?

Fat: How Much is Right for You? Enzymes, Metabolism, and Cellular Respiration

Life in the Greenhouse: Photosynthesis and Global Warming

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 Fingerprinting

Genetically Modified Organisms: Gene Expression, Mutation, and Cloning

Where Did We Come From? The Evidence for Evolution

An Evolving Enemy: Natural Selection

Prospecting for Biological Gold: 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 Organs and Organ Systems

Clearing the Air: Respiratory Cardiovascular and Excretory Systems

Vaccinations: Protection and Prevention or Peril? Immune System

Sex Differences and Athleticism: Endocrine Skeletal and Muscular Systems

Is There Something in the Water? Reproductive and Developmental Biology

Attention Deficit Disorder: Brain Structure and Function

Feeding the World: Plant Structure and Growth

Growing a Green Thumb: Plant Physiology

Filters