Question 1

A bell curve is characteristic of the distribution of phenotypes of a multifactorial trait because

Accepted Answer

A)  the phenotypes in the middle of the curve correspond to fewer genotypes than the phenotypes at the ends of the distribution.
B)  the phenotypes at the ends of the curve correspond to fewer genotypes than the phenotypes at the middle of the distribution.
C)  most people are average for the trait.
D)  people at the extreme ends of the distribution do not survive to reproduce.E) All of the above
F) A) and B)

Question 2

How alike are our genomes?

Accepted Answer

A)  About 10%
B)  About 25%
C)  About 75%
D)  Nearly 100%E) A) and B)
F) None of the above

Question 3

A pedigree is a chart that aligns chromosome pairs by size.

Accepted Answer

A) True 
 B)False

Question 4

Absence of the SRY gene and expression of the Wnt4 gene are necessary for female reproductive structures to develop in an embryo and fetus.

Accepted Answer

A) True 
 B)False

Question 5

The two types of information needed to predict the inheritance pattern of a trait are

Accepted Answer

A)  the way genes are distributed in meiosis and the way that they come together when sperm joins egg.
B)  the health of the mother and the father.
C)  the way mitosis distributes the alleles of a gene and whether those alleles are dominant or recessive.
D)  the age at which the trait appears and how it affects males or females.E) A) and B)
F) B) and D)

Question 6

An inverted bell-shaped curve represents the distribution of phenotypes of a multifactorial trait in a population.

Accepted Answer

A) True 
 B)False

Question 7

Genetic information passes from protein to RNA to DNA.

Accepted Answer

A) True 
 B)False

Question 8

A disorder that skips generations,affects both sexes,and is transmitted by parents who either have the condition or carry it is autosomal recessive.

Accepted Answer

A) True 
 B)False

Question 9

The chemical group that binds to DNA causing genomic imprinting is

Accepted Answer

A)  methyl.
B)  RNA.
C)  a transcription factor.
D)  an amino aciD.E) A) and D)
F) C) and D)

Question 10

A gene is

Accepted Answer

A)  a DNA sequence that contains the information for producing one type of protein.
B)  a structure that contains chromosomes.
C)  an amino acid sequence that contains the information for producing a particular DNA sequence.
D)  the collection of all of the protein-encoding DNA sequences on a particular chromosome.E) B) and D)
F) A) and C)

Question 11

A human male is hemizygous for genes on the X chromosome because he has two copies of that chromosome.

Accepted Answer

A) True 
 B)False

Question 12

The approximate number of protein-encoding genes on the Y chromosome is

Accepted Answer

A)  >1,500.
B)  231.
C)  10.
D)  greater in males than females.E) B) and C)
F) A) and D)

Question 13

We can predict the likelihood of a particular inherited trait occurring in a particular family member by consulting the ways that genes are transmitted on chromosomes.

Accepted Answer

A) True 
 B)False

Question 14

In a simple dominant-recessive inheritance pattern,what percentage of the offspring would exhibit the dominant trait if one parent is heterozygous and the other is homozygous recessive?

Accepted Answer

A)  25%
B)  50%
C)  75%
D)  100%E) All of the above
F) A) and B)

Question 15

Which of the following chromosomal abnormalities most severely affect a fetus?

Accepted Answer

A)  XXX
B)  Monosomy for a large autosome
C)  Trisomy 21
D)  XXYE) All of the above
F) B) and D)

Question 16

Gene expression profiling is used to compare and contrast how different types of cells function.

Accepted Answer

A) True 
 B)False

Question 17

Gene expression profiling

Accepted Answer

A)  detects the mRNAs present in a particular cell type under particular conditions.
B)  detects the mutations that a person has inherited.
C)  is a chart of chromosomes in specific cell types.
D)  is a size-order chart of chromosomes.E) A) and B)
F) None of the above

Question 18

Beard growth is a sex-influenced trait.

Accepted Answer

A) True 
 B)False

Question 19

The term "exome" refers to

Accepted Answer

A)  the parts of the genome that determine sex.
B)  the protein-encoding parts of the genome.
C)  the parts of the genome that lie exteriorly along the chromosomes.
D)  the set of RNAs made in a particular cell type under specific conditions.E) B) and D)
F) A) and D)

Question 20

A human cell that has 69 chromosomes is

Accepted Answer

A)  aneuploid.
B)  triploid.
C)  diploid.
D)  euploiD.E) A) and D)
F) B) and D)

Exam 24: Genetics and Genomics

The approximate number of protein-encoding genes on the Y chromosome is

Correct AnswerverifiedShow Answer

A human cell that has 69 chromosomes is

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A disorder that skips generations,affects both sexes,and is transmitted by parents who either have the condition or carry it is autosomal recessive.

Correct AnswerverifiedShow Answer

The two types of information needed to predict the inheritance pattern of a trait are

Correct AnswerverifiedShow Answer

A gene is

Correct AnswerverifiedShow Answer

Beard growth is a sex-influenced trait.

Correct AnswerverifiedShow Answer

The chemical group that binds to DNA causing genomic imprinting is

Correct AnswerverifiedShow Answer

The term "exome" refers to

Correct AnswerverifiedShow Answer

Gene expression profiling

Correct AnswerverifiedShow Answer

A human male is hemizygous for genes on the X chromosome because he has two copies of that chromosome.

Correct AnswerverifiedShow Answer

An inverted bell-shaped curve represents the distribution of phenotypes of a multifactorial trait in a population.

Correct AnswerverifiedShow Answer

Which of the following chromosomal abnormalities most severely affect a fetus?

Correct AnswerverifiedShow Answer

How alike are our genomes?

Correct AnswerverifiedShow Answer

Genetic information passes from protein to RNA to DNA.

Correct AnswerverifiedShow Answer

A pedigree is a chart that aligns chromosome pairs by size.

Correct AnswerverifiedShow Answer

Gene expression profiling is used to compare and contrast how different types of cells function.

Correct AnswerverifiedShow Answer

Absence of the SRY gene and expression of the Wnt4 gene are necessary for female reproductive structures to develop in an embryo and fetus.

Correct AnswerverifiedShow Answer

In a simple dominant-recessive inheritance pattern,what percentage of the offspring would exhibit the dominant trait if one parent is heterozygous and the other is homozygous recessive?

Correct AnswerverifiedShow Answer

A bell curve is characteristic of the distribution of phenotypes of a multifactorial trait because

Correct AnswerverifiedShow Answer

We can predict the likelihood of a particular inherited trait occurring in a particular family member by consulting the ways that genes are transmitted on chromosomes.

Correct AnswerverifiedShow Answer

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