Question 1

There is a single gene that controls the ability to taste PTC paper. The ability to taste is dominant to the inability to taste. If you can taste the paper, it is very bitter. Which of the following genotypes can taste the paper?

Accepted Answer

A)   only PP
B)   both PP and Pp
C)   both PP and pp
D)   only Pp
E)   only ppF) A) and B)
G) A) and D)

Question 2

In a cross of Ff x Ff, the probability of having a dominant phenotype is

Accepted Answer

A)   1/4.
B)   1/3.
C)   1/2.
D)   2/3.
E)   3/4.F) B) and D)
G) A) and E)

Question 3

Which of the following is not an autosomal recessive disorder?

Accepted Answer

A)   Marfan syndrome
B)   Tay-Sachs disease
C)   cystic fibrosis
D)   sickle cell disease
E)   all are autosomal recessive disordersF) C) and D)
G) A) and E)

Question 4

How is familial hypercholesterolemia inherited?

Accepted Answer

A)   autosomal recessive
B)   autosomal dominant
C)   incompletely dominant
D)   codominant
E)   sex-linked dominantF) B) and C)
G) C) and D)

Question 5

A male inherits his X linked allele from his mother.

Accepted Answer

A) True 
 B)False

Question 6

Is it possible for a man with type O blood to be the father of a child with type A blood?

Accepted Answer

The answer of Is it possible for a man with...

Question 7

Dad has a genotype of AaBb. How many different kinds of sperm can he produce?

Accepted Answer

A)   one
B)   two
C)   three
D)   four
E)   fiveF) C) and E)
G) B) and E)

Question 8

When describing someone as "lactose intolerant", you are describing their

Accepted Answer

A)   genotype.
B)   phenotype.
C)   alleles.
D)   genome.
E)   none of theseF) A) and C)
G) A) and B)

Question 9

In a pedigree, an affected male would be designated by

Accepted Answer

A)   an open circle.
B)   a shaded circle.
C)   an open square.
D)   a shaded square.
E)   a square with a line through it.F) C) and D)
G) A) and B)

Question 10

Which of the following designations indicates a sex-linked trait?

Accepted Answer

A)   A
B)   IA
C)   XB
D)   a
E)   iF) C) and D)
G) B) and D)

Question 11

While a locus refers to a unit of heredity, a gene refers to a specific position on a chromosome.

Accepted Answer

A) True 
 B)False

Question 12

Which of the following terms refers to the genes of an individual?

Accepted Answer

A)   genotype
B)   phenotype
C)   gamete
D)   probability
E)   autosomalF) B) and C)
G) C) and D)

Question 13

Clasp your hands together (without thinking about it) . Which thumb is on top every time you do this? The dominant phenotype is left thumb on top. If you have the genotype "tt", which thumb is on top?

Accepted Answer

A)   left
B)   right
C)   left 50% of the time and right 50% of the time
D)   left 25% of the time and right 75% of the time
E)   left 75% of the time and right 25% of the timeF) All of the above
G) D) and E)

Question 14

The square that is used to make all the possible combinations of gametes is called a Punnett square.

Accepted Answer

A) True 
 B)False

Question 15

Describe what is meant by a polygenic traits.

Accepted Answer

Polygenic traits are governed by several...

Question 16

If a person with type B blood marries a person with type A blood, what phenotypes can their children be?

Accepted Answer

A)   all type A
B)   all type B
C)   types A and O
D)   types B and O
E)   types A, B, O, and ABF) B) and C)
G) B) and E)

Question 17

In a cross of Ss x Ss, the probability of having a heterozygous genotype is

Accepted Answer

A)   1/4.
B)   1/3.
C)   1/2.
D)   2/3.
E)   3/4.F) A) and E)
G) B) and C)

Question 18

Can two parents that have a genetic disorder ever have a normal child?

Accepted Answer

The answer of Can two parents that have a genetic...

Question 19

When you describe a person as having attached ear lobes, you are describing their genotype.

Accepted Answer

A) True 
 B)False

Question 20

Unattached earlobes are a dominant trait in humans. Which phenotype is most likely for an individual with the genotype EE?

Accepted Answer

A)   both earlobes are unattached
B)   both earlobes are attach
C)   the right earlobe is attached and the left earlobe is unattached
D)   the right earlobe is unattached and the left earlobe is attached
E)   both earlobes are extremely elongatedF) A) and D)
G) C) and D)

Exam 20: Patterns of Genetic Inheritance

Which of the following terms refers to the genes of an individual?

Correct AnswerverifiedShow Answer

In a cross of Ff x Ff, the probability of having a dominant phenotype is

Correct AnswerverifiedShow Answer

In a cross of Ss x Ss, the probability of having a heterozygous genotype is

Correct AnswerverifiedShow Answer

Can two parents that have a genetic disorder ever have a normal child?

Correct AnswerverifiedShow Answer

There is a single gene that controls the ability to taste PTC paper. The ability to taste is dominant to the inability to taste. If you can taste the paper, it is very bitter. Which of the following genotypes can taste the paper?

Correct AnswerverifiedShow Answer

A male inherits his X linked allele from his mother.

Correct AnswerverifiedShow Answer

How is familial hypercholesterolemia inherited?

Correct AnswerverifiedShow Answer

When you describe a person as having attached ear lobes, you are describing their genotype.

Correct AnswerverifiedShow Answer

Unattached earlobes are a dominant trait in humans. Which phenotype is most likely for an individual with the genotype EE?

Correct AnswerverifiedShow Answer

Dad has a genotype of AaBb. How many different kinds of sperm can he produce?

Correct AnswerverifiedShow Answer

Describe what is meant by a polygenic traits.

Correct AnswerverifiedPolygenic traits are governed by several...View AnswerShow Answer

Which of the following designations indicates a sex-linked trait?

Correct AnswerverifiedShow Answer

Is it possible for a man with type O blood to be the father of a child with type A blood?

Correct AnswerverifiedShow Answer

The square that is used to make all the possible combinations of gametes is called a Punnett square.

Correct AnswerverifiedShow Answer

If a person with type B blood marries a person with type A blood, what phenotypes can their children be?

Correct AnswerverifiedShow Answer

While a locus refers to a unit of heredity, a gene refers to a specific position on a chromosome.

Correct AnswerverifiedShow Answer

Which of the following is not an autosomal recessive disorder?

Correct AnswerverifiedShow Answer

In a pedigree, an affected male would be designated by

Correct AnswerverifiedShow Answer

Clasp your hands together (without thinking about it) . Which thumb is on top every time you do this? The dominant phenotype is left thumb on top. If you have the genotype "tt", which thumb is on top?

Correct AnswerverifiedShow Answer

When describing someone as "lactose intolerant", you are describing their

Correct AnswerverifiedShow Answer

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Polygenic traits are governed by several...
View Answer

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