Question 1

Mendel's law of segregation states that the two alleles of each gene are packaged into separate gametes.

Accepted Answer

A) True 
 B)False

Question 2

All gametes contain:

Accepted Answer

A)  Two identical sets of chromosomes
B)  Two different sets of chromosomes
C)  One set of chromosomes
D)  One chromosome
E)  Two chromosomesF) A) and D)
G) A) and B)

Question 3

When a farmer grows cotton containing the gene for Bt toxin,insects that are resistant (rr) survive and reproduce.These insects were resistant because:

Accepted Answer

A)  They already had alleles that made them resistant
B)  The insecticide caused mutations to generate resistant alleles
C)  The insects wanted to survive the insecticide and mutated their DNA
D)  By random chance some insects did not die from the insecticide
E)  The insects were able to produce gametes that were resistant to the insecticideF) B) and D)
G) C) and D)

Question 4

Each gamete arises from a diploid cell containing two sets of homologous chromosomes.

Accepted Answer

A) True 
 B)False

Question 5

Recombinant chromosomes have a mix of paternal and maternal alleles due to:

Accepted Answer

A)  Random fertilization
B)  Linkage
C)  Independent assortment
D)  Crossing over
E)  MutationF) All of the above
G) A) and E) D

Question 6

Yellow peas are an example of:

Accepted Answer

A)  A phenotype
B)  A genotype
C)  An allele
D)  A gene
E)  A lociF) A) and B)
G) A) and C) A

Question 7

A testcross is a mating of an individual with an unknown genotype and an individual that:

Accepted Answer

A)  Is heterozygous
B)  Is homozygous dominant
C)  Is homozygous recessive
D)  Has any known genotype
E)  Wild typeF) B) and E)
G) A) and D)

Question 8

An active X chromosome in a female is called a Barr body.

Accepted Answer

A) True 
 B)False

Question 9

Of all the people who have studied inheritance,the person who made the most lasting impression on the science of genetics is:

Accepted Answer

A)  Charles Darwin
B)  Robert Hooke
C)  King George III
D)  Frederick Griffith
E)  Gregor MendelF) A) and B)
G) A) and C)

Question 10

When a farmer grows cotton containing the gene for Bt toxin,insects that are resistant (rr) survive and reproduce.This is an example of:

Accepted Answer

A)  Dominance
B)  Genetic drift
C)  Recombination
D)  Independent assortment
E)  Natural selectionF) None of the above
G) C) and D)

Question 11

In order for a girl to inherit hemophilia A,her parents would have which genotypes?

Accepted Answer

A)  XH XH, Xh Y
B)  XH Xh, XH Y
C)  XH Xh, Xh Y
D)  XH XH,XH y
E)  Xh Xh,XH yF) B) and C)
G) C) and D) C

Question 12

You mate two pea plants that are both AaBb and get a 3:1 phenotype ratio.This suggests:

Accepted Answer

A)  Independent assortment occurred
B)  Genes A and B are on the same chromosome
C)  Crossing over occurred
D)  Genes A and B are on different chromosomes
E)  Non-disjunction occurredF) B) and C)
G) C) and D)

Question 13

If you cross two heterozygous Yy pea plants,what fraction of the offspring will be yellow?

Accepted Answer

A)  50%
B)  75%
C)  25%
D)  0%
E)  100%F) B) and E)
G) A) and E)

Question 14

Genotype means:

Accepted Answer

A)  The number of gametes in an individual
B)  The combination of alleles in an individual
C)  The number of chromosomes in an individual
D)  The observable expression of the genes in an individual
E)  The genes an individual hasF) C) and E)
G) A) and C)

Question 15

A man with type A blood and a woman with type B blood have a child with type O blood.What are the genotypes of the man and woman?

Accepted Answer

A)  IA i , and IB i
B)  Both are i i
C)  IA IA, and IB IB
D)  IA i, and i i
E)  i i, and IB iF) B) and C)
G) B) and D)

Question 16

To inherit an autosomal recessive disorder requires a person to receive the disease causing allele from:

Accepted Answer

A)  The father only
B)  The mother only
C)  Only the parent having the disease
D)  Only one parent who is homozygous recessive for the disease
E)  Both parentsF) A) and B)
G) C) and D)

Question 17

If you cross RrYy and RRyy pea plants,what fraction of the offspring will have round yellow peas? R=round,r=wrinkled,Y=yellow,y=green.

Accepted Answer

A)  100%
B)  75%
C)  25%
D)  0%
E)  50%F) A) and C)
G) A) and D)

Question 18

In the ABO blood type system the IA allele is _____ with the IB allele.

Accepted Answer

A)  Dominant
B)  Co-dominant
C)  Recessive
D)  Homologous
E)  HeterologousF) B) and C)
G) All of the above

Question 19

You are studying genes in yeast and find that the genes can be placed into four groups that tend to be inherited together.From this you can conclude:

Accepted Answer

A)  Yeast have four genes
B)  Yeast have four alleles
C)  Yeast produce four cells during meiosis
D)  Yeast have four chromosomes
E)  Yeast have four lociF) C) and E)
G) B) and C)

Question 20

A recessive allele is one whose effect is masked if a dominant allele is also present.

Accepted Answer

A) True 
 B)False

Exam 10: Patterns of Inheritance

Mendel's law of segregation states that the two alleles of each gene are packaged into separate gametes.

Correct AnswerverifiedShow Answer

All gametes contain:

Correct AnswerverifiedShow Answer

When a farmer grows cotton containing the gene for Bt toxin,insects that are resistant (rr) survive and reproduce.These insects were resistant because:

Correct AnswerverifiedShow Answer

Each gamete arises from a diploid cell containing two sets of homologous chromosomes.

Correct AnswerverifiedShow Answer

Recombinant chromosomes have a mix of paternal and maternal alleles due to:

Correct AnswerverifiedD

Yellow peas are an example of:

Correct AnswerverifiedA

A testcross is a mating of an individual with an unknown genotype and an individual that:

Correct AnswerverifiedShow Answer

An active X chromosome in a female is called a Barr body.

Correct AnswerverifiedShow Answer

Of all the people who have studied inheritance,the person who made the most lasting impression on the science of genetics is:

Correct AnswerverifiedShow Answer

When a farmer grows cotton containing the gene for Bt toxin,insects that are resistant (rr) survive and reproduce.This is an example of:

Correct AnswerverifiedShow Answer

In order for a girl to inherit hemophilia A,her parents would have which genotypes?

Correct AnswerverifiedC

You mate two pea plants that are both AaBb and get a 3:1 phenotype ratio.This suggests:

Correct AnswerverifiedShow Answer

If you cross two heterozygous Yy pea plants,what fraction of the offspring will be yellow?

Correct AnswerverifiedShow Answer

Genotype means:

Correct AnswerverifiedShow Answer

A man with type A blood and a woman with type B blood have a child with type O blood.What are the genotypes of the man and woman?

Correct AnswerverifiedShow Answer

To inherit an autosomal recessive disorder requires a person to receive the disease causing allele from:

Correct AnswerverifiedShow Answer

If you cross RrYy and RRyy pea plants,what fraction of the offspring will have round yellow peas? R=round,r=wrinkled,Y=yellow,y=green.

Correct AnswerverifiedShow Answer

In the ABO blood type system the IA allele is _____ with the IB allele.

Correct AnswerverifiedShow Answer

You are studying genes in yeast and find that the genes can be placed into four groups that tend to be inherited together.From this you can conclude:

Correct AnswerverifiedShow Answer

A recessive allele is one whose effect is masked if a dominant allele is also present.

Correct AnswerverifiedShow Answer

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D

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A

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C

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In the ABO blood type system the I^A allele is _____ with the I^B allele.

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