Question 1

Which of the following is not a characteristic of continuous variation?

Accepted Answer

A)  Traits can be quantified by measurement. 
B)  Only a single gene pair contributes to the phenotype. 
C)  The effect of each additive allele is small. 
D)  Phenotypes show wide variation in expression. 
E)  All of these are characteristics of continuous variation. 
A)  Traits can be quantified by measurement. 
B)  Only a single gene pair contributes to the phenotype. 
C)  The effect of each additive allele is small. 
D)  Phenotypes show wide variation in expression. 
E)  All of these are characteristics of continuous variation.

Question 2

All multifactorial traits are polygenic but the reverse is not true.

Accepted Answer

A) True 
 B)False

Question 3

While monozygotic twins share the same genome, their fingerprints are not identical. Why is this so?

Accepted Answer

Monozygotic twins, also known as identic

Question 4

Most evidence indicates that skin color is controlled by how many gene pairs?

Accepted Answer

A)  One 
B)  Two to three 
C)  Three to four 
D)  Five to seven 
E)  More than twelve 
A)  One 
B)  Two to three 
C)  Three to four 
D)  Five to seven 
E)  More than twelve

Question 5

Provide evidence from a specific example that argues for a substantial role for the environment in determining IQ.

Accepted Answer

One specific example that argues for a s

Question 6

Scientists are now using an expanded definition of intelligence, beyond IQ, called ____________________.

Accepted Answer

general co

Question 7

For threshold traits the liability for a genetic disorder is distributed among individuals in a normal curve.

Accepted Answer

A) True 
 B)False

Question 8

Mendel's experiments with pea plants yielded useful results because

Accepted Answer

A)  pea plants exhibit continuous variation. 
B)  pea plants exhibit a variety of inheritance patterns. 
C)  pea plants show discontinuous variation and complete dominance. 
D)  pea plants are sterile. 
E)  more than one of these are correct. 
A)  pea plants exhibit continuous variation. 
B)  pea plants exhibit a variety of inheritance patterns. 
C)  pea plants show discontinuous variation and complete dominance. 
D)  pea plants are sterile. 
E)  more than one of these are correct.

Question 9

Name five human traits that could be described as multifactorial from twin studies and concordance rates.

Accepted Answer

Multifactorial traits are characteristic

Question 10

If a trait is genetically determined, the correlation between DZ twins should be lower than that for MZ twins.

Accepted Answer

A) True 
 B)False

Question 11

According to the threshold model, for a family in which a disorder occurs, the risk of the disorder decreases as relatedness decreases.

Accepted Answer

A) True 
 B)False

Question 12

______________ traits are those that result from the interaction of genes and the environment..

Accepted Answer

The answer of ______________ traits are those that result from...

Question 13

Many studies have been conducted on the heritability of obesity. With fairly strong consistency they indicate that the heritability of this trait is about:

Accepted Answer

A)  0.1 
B)  0.3 
C)  0.5 
D)  0.7 
E)  0.9 
A)  0.1 
B)  0.3 
C)  0.5 
D)  0.7 
E)  0.9

Question 14

Twins are said to be concordant for a trait when

Accepted Answer

A)  both twins exhibit the trait. 
B)  only identical twins exhibit the trait. 
C)  only fraternal twins exhibit the trait. 
D)  fraternal twins more often show the trait than identical twins. 
E)  None of these is true. 
A)  both twins exhibit the trait. 
B)  only identical twins exhibit the trait. 
C)  only fraternal twins exhibit the trait. 
D)  fraternal twins more often show the trait than identical twins. 
E)  None of these is true.

Question 15

The correlation coefficient for totally unrelated people is ____________________.

Accepted Answer

The answer of The correlation coefficient for totally unrelated people...

Question 16

Concordance values for twins are only useful in studying traits that are completely heritable.

Accepted Answer

A) True 
 B)False

Question 17

Which statement about the interaction between genes and environment is most correct?

Accepted Answer

A)  Phenotypic variation is derived from a single source. 
B)  The phenotype, once determined, is invariable. 
C)  The phenotype is produced by interaction of genotype and the environment. 
D)  The phenotype can be quantified into genotypic and environmental components. 
E)  None of these is true. 
A)  Phenotypic variation is derived from a single source. 
B)  The phenotype, once determined, is invariable. 
C)  The phenotype is produced by interaction of genotype and the environment. 
D)  The phenotype can be quantified into genotypic and environmental components. 
E)  None of these is true.

Question 18

______________ twins result from a single fertilization event.

Accepted Answer

The answer of ______________ twins result from a single fertilization...

Question 19

Davenport and Davenport estimated that two genes control skin color in humans, while, according to others, as many as four different genes are involved. Why has there been so much difficulty in determining the number of genes controlling this trait?

Accepted Answer

There has been difficulty in determining

Question 20

The heritability of IQ is about 0.5. This is interpreted by some to mean that IQ is 50 percent genetic and 50 percent environmental. Is this correct? What exactly does a heritability value of 0.5 mean?

Accepted Answer

The heritability of a trait, such as IQ

Which of the following is not a characteristic of continuous variation?

All multifactorial traits are polygenic but the reverse is not true.

While monozygotic twins share the same genome, their fingerprints are not identical. Why is this so?

Most evidence indicates that skin color is controlled by how many gene pairs?

Provide evidence from a specific example that argues for a substantial role for the environment in determining IQ.

Scientists are now using an expanded definition of intelligence, beyond IQ, called ____________________.

For threshold traits the liability for a genetic disorder is distributed among individuals in a normal curve.

Mendel's experiments with pea plants yielded useful results because

Name five human traits that could be described as multifactorial from twin studies and concordance rates.

If a trait is genetically determined, the correlation between DZ twins should be lower than that for MZ twins.

According to the threshold model, for a family in which a disorder occurs, the risk of the disorder decreases as relatedness decreases.

______________ traits are those that result from the interaction of genes and the environment..

Many studies have been conducted on the heritability of obesity. With fairly strong consistency they indicate that the heritability of this trait is about:

Twins are said to be concordant for a trait when

The correlation coefficient for totally unrelated people is ____________________.

Concordance values for twins are only useful in studying traits that are completely heritable.

Which statement about the interaction between genes and environment is most correct?

______________ twins result from a single fertilization event.

Davenport and Davenport estimated that two genes control skin color in humans, while, according to others, as many as four different genes are involved. Why has there been so much difficulty in determining the number of genes controlling this trait?

The heritability of IQ is about 0.5. This is interpreted by some to mean that IQ is 50 percent genetic and 50 percent environmental. Is this correct? What exactly does a heritability value of 0.5 mean?

A Perspective on Human Genetics

Cells and Cell Division

Transmission of Genes From Generation to Generation

Pedigree Analysis in Human Genetics

Cytogenetics: Karyotypes and Chromosome Aberrations

Development and Sex Determination

DNA Structure and Chromosomal Organization

Gene Expression: From Genes to Proteins

From Proteins to Phenotypes

Mutation: the Source of Genetic Variation

Genes and Cancer

An Introduction to Genetic Technology

Biotechnology and Society

Genomes and Genomics

Reproductive Technology, Genetic Testing, and Gene Therapy

Genes and the Immune System

Genetics of Behavior

Population Genetics and Human Evolution

Filters

Exam 5: Complex Patterns of Inheritance

Which of the following is not a characteristic of continuous variation?

All multifactorial traits are polygenic but the reverse is not true.

While monozygotic twins share the same genome, their fingerprints are not identical. Why is this so?

Most evidence indicates that skin color is controlled by how many gene pairs?

Provide evidence from a specific example that argues for a substantial role for the environment in determining IQ.

Scientists are now using an expanded definition of intelligence, beyond IQ, called ____________________.

For threshold traits the liability for a genetic disorder is distributed among individuals in a normal curve.

Mendel's experiments with pea plants yielded useful results because

Name five human traits that could be described as multifactorial from twin studies and concordance rates.

If a trait is genetically determined, the correlation between DZ twins should be lower than that for MZ twins.

According to the threshold model, for a family in which a disorder occurs, the risk of the disorder decreases as relatedness decreases.

______________ traits are those that result from the interaction of genes and the environment..

Many studies have been conducted on the heritability of obesity. With fairly strong consistency they indicate that the heritability of this trait is about:

Twins are said to be concordant for a trait when

The correlation coefficient for totally unrelated people is ____________________.

Concordance values for twins are only useful in studying traits that are completely heritable.

Which statement about the interaction between genes and environment is most correct?

______________ twins result from a single fertilization event.

Davenport and Davenport estimated that two genes control skin color in humans, while, according to others, as many as four different genes are involved. Why has there been so much difficulty in determining the number of genes controlling this trait?

The heritability of IQ is about 0.5. This is interpreted by some to mean that IQ is 50 percent genetic and 50 percent environmental. Is this correct? What exactly does a heritability value of 0.5 mean?

A Perspective on Human Genetics

Cells and Cell Division

Transmission of Genes From Generation to Generation

Pedigree Analysis in Human Genetics

Cytogenetics: Karyotypes and Chromosome Aberrations

Development and Sex Determination

DNA Structure and Chromosomal Organization

Gene Expression: From Genes to Proteins

From Proteins to Phenotypes

Mutation: the Source of Genetic Variation

Genes and Cancer

An Introduction to Genetic Technology

Biotechnology and Society

Genomes and Genomics

Reproductive Technology, Genetic Testing, and Gene Therapy

Genes and the Immune System

Genetics of Behavior

Population Genetics and Human Evolution

Filters