Question 1

An individual who has two copies of the same allele is ________ for that allele.

Accepted Answer

The answer of An individual who has two copies of...

Question 2

Which of the following situations most likely describes a recessive genetic disorder?

Accepted Answer

A)  The mutant allele of the gene encodes a completely nonfunctional protein. 
B)  The mutant allele of the gene encodes a protein that has both the normal function and a new, harmful function. 
C)  The mutant allele of the gene encodes a protein that has a new, harmful function. 
D)  The mutant allele of the gene encodes a protein with the normal function but twice the normal activity. 
A)  The mutant allele of the gene encodes a completely nonfunctional protein. 
B)  The mutant allele of the gene encodes a protein that has both the normal function and a new, harmful function. 
C)  The mutant allele of the gene encodes a protein that has a new, harmful function. 
D)  The mutant allele of the gene encodes a protein with the normal function but twice the normal activity.

Question 3

Consider a trait that shows continuous variation. If the variance is low, then

Accepted Answer

A)  the majority of individuals will be far above the mean. 
B)  the majority of individuals will be very close to the mean. 
C)  the majority of individuals will be far below the mean. 
D)  relatively few individuals will be very close to the mean. 
A)  the majority of individuals will be far above the mean. 
B)  the majority of individuals will be very close to the mean. 
C)  the majority of individuals will be far below the mean. 
D)  relatively few individuals will be very close to the mean.

Question 4

Huntington's disease is caused by the allele H, which is completely dominant to the normal recessive allele h. Consider a couple where the man has the genotype Hh, and the woman has the genotype hh. What is the chance that their first child will develop Huntington's disease?

Accepted Answer

A)  0% 
B)  25% 
C)  50% 
D)  75% 
A)  0% 
B)  25% 
C)  50% 
D)  75%

Question 5

In humans, straight thumbs are caused by the dominant allele T, while individuals who are tt have thumbs that curve backward ("hitchhiker's thumb"). Consider a family in which the father has straight thumbs, and both the mother and their only child have curved thumbs. What is the chance that their next child will have curved thumbs?

Accepted Answer

A)  25% 
B)  50% 
C)  75% 
D)  100% 
A)  25% 
B)  50% 
C)  75% 
D)  100%

Question 6

Specialized cells used for sexual reproduction (for example, sperm cells)are called ________.

Accepted Answer

The answer of Specialized cells used for sexual reproduction (for...

Question 7

Typical quantitative traits

Accepted Answer

A)  are easy to follow using Punnett squares. 
B)  are not affected by the environment. 
C)  are usually influenced by only one gene. 
D)  show continuous variation. 
A)  are easy to follow using Punnett squares. 
B)  are not affected by the environment. 
C)  are usually influenced by only one gene. 
D)  show continuous variation.

Question 8

Prokaryotes, like bacteria, contain a single ________ that is circular.

Accepted Answer

The answer of Prokaryotes, like bacteria, contain a single ________...

Question 9

Which if the following is the correct sequence of how an animal is "built"?

Accepted Answer

A)  fertilization $\rightarrow$ meiosis $\rightarrow$ zygote $\rightarrow$ embryo 
B)  meiosis $\rightarrow$ fertilization $\rightarrow$ zygote $\rightarrow$ embryo 
C)  fertilization $\rightarrow$ zygote $\rightarrow$ meiosis $\rightarrow$ embryo 
D)  meiosis $\rightarrow$ fertilization $\rightarrow$ embryo $\rightarrow$ zygote 
A)  fertilization $\rightarrow$ meiosis $\rightarrow$ zygote $\rightarrow$ embryo 
B)  meiosis $\rightarrow$ fertilization $\rightarrow$ zygote $\rightarrow$ embryo 
C)  fertilization $\rightarrow$ zygote $\rightarrow$ meiosis $\rightarrow$ embryo 
D)  meiosis $\rightarrow$ fertilization $\rightarrow$ embryo $\rightarrow$ zygote

Question 10

Which of the following is an example of a qualitative trait in humans?

Accepted Answer

A)  height 
B)  skin color 
C)  Huntington's disease 
D)  intelligence 
A)  height 
B)  skin color 
C)  Huntington's disease 
D)  intelligence

Question 11

Which of these describes influence on a trait that is due to genes and not environment?

Accepted Answer

A)  Hair dye turns Angela's brown hair to red. 
B)  Sandy's hair becomes blonder when she spends time out in the sun. 
C)  Jen has brown hair, just like her mother and father. 
D)  Identical twins Kiera and Tanya have different colored hair. 
A)  Hair dye turns Angela's brown hair to red. 
B)  Sandy's hair becomes blonder when she spends time out in the sun. 
C)  Jen has brown hair, just like her mother and father. 
D)  Identical twins Kiera and Tanya have different colored hair.

An individual who has two copies of the same allele is ________ for that allele.

Which of the following situations most likely describes a recessive genetic disorder?

Consider a trait that shows continuous variation. If the variance is low, then

Huntington's disease is caused by the allele H, which is completely dominant to the normal recessive allele h. Consider a couple where the man has the genotype Hh, and the woman has the genotype hh. What is the chance that their first child will develop Huntington's disease?

Specialized cells used for sexual reproduction (for example, sperm cells)are called ________.

Typical quantitative traits

Prokaryotes, like bacteria, contain a single ________ that is circular.

Which if the following is the correct sequence of how an animal is "built"?

Which of the following is an example of a qualitative trait in humans?

Which of these describes influence on a trait that is due to genes and not environment?

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

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

Who Am I? Species and Races

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 7: Are You Only as Smart as Your Genes? Mendelian and Quantitative Genetics

An individual who has two copies of the same allele is ________ for that allele.

Which of the following situations most likely describes a recessive genetic disorder?

Consider a trait that shows continuous variation. If the variance is low, then

Huntington's disease is caused by the allele H, which is completely dominant to the normal recessive allele h. Consider a couple where the man has the genotype Hh, and the woman has the genotype hh. What is the chance that their first child will develop Huntington's disease?

Specialized cells used for sexual reproduction (for example, sperm cells)are called ________.

Typical quantitative traits

Prokaryotes, like bacteria, contain a single ________ that is circular.

Which if the following is the correct sequence of how an animal is "built"?

Which of the following is an example of a qualitative trait in humans?

Which of these describes influence on a trait that is due to genes and not environment?

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

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

Who Am I? Species and Races

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