Question 1

What is a karyotype? Explain a situation in which it could be used for genetic counseling.

Accepted Answer

A karyotype is a visual representation o...

Question 2

The structure that divides the chromosome into longer and shorter segments is called the

Accepted Answer

A)   centromere
B)   genome
C)   mitochondria
D)   centriolesE) B) and D)
F) A) and C)

Question 3

PKU can be managed by careful dietary restrictions of certain amino acids.

Accepted Answer

A) True 
 B)False

Question 4

The human genome contains about how many genes?

Accepted Answer

A)   100,000
B)   75,000
C)   50,000
D)   25,000E) A) and D)
F) A) and C)

Question 5

A color-blind mother and a normal vision father will have both sons and daughters who are color-blind.

Accepted Answer

A) True 
 B)False

Question 6

A father and mother who both have normal skin color but carry the gene for albinism will have only offspring with normal skin color.

Accepted Answer

A) True 
 B)False

Question 7

Viruses and bacterial plasmids have been used to get genetic material into the cell to treat genetic diseases.

Accepted Answer

A) True 
 B)False

Question 8

Match each term with its corresponding definition or description.
-a photograph of chromosomes that are cut out and pasted on a chart in pairs according to size

Accepted Answer

A)  Turner syndrome
B)  cystic fibrosis
C)  Down syndrome
D)  pedigree
E)  single-gene diseaseF) Klinefelter syndromeG) karyotypeH) genetic predispositionI) PKUJ) Punnett squareK) D) and F)
L) F) and J)

Question 9

The p-arm is the long segment of the chromosome.

Accepted Answer

A) True 
 B)False

Question 10

All mutations are harmful to the organism.

Accepted Answer

A) True 
 B)False

Question 11

Tay-Sachs disease is caused by a failure to make an enzyme that converts an amino acid into tyrosine.

Accepted Answer

A) True 
 B)False

Question 12

MATCHING
Match each term with its corresponding definition or description.
-a non-sex chromosome

Accepted Answer

A)  proteome
B)  crossing-over
C)  dominant gene
D)  gene
E)  p-armF) trisomyG) geneticsH) recessive geneI) genomeJ) q-armK) sex-linked traitL) genetic mutationM) monosomyN) autosomeO) nondisjunctionP) F) and G)
Q) C) and D)

Question 13

The first step in gene expression is the formation of a molecule of mRNA.

Accepted Answer

A) True 
 B)False

Question 14

Which of the following conditions results from monosomy?

Accepted Answer

A)   Down syndrome
B)   Turner syndrome
C)   Klinefelter syndrome
D)   both A and C aboveE) All of the above
F) B) and C)

Question 15

Match each term with its corresponding definition or description.
-condition of people with XXY chromosomes

Accepted Answer

A)  Turner syndrome
B)  cystic fibrosis
C)  Down syndrome
D)  pedigree
E)  single-gene diseaseF) Klinefelter syndromeG) karyotypeH) genetic predispositionI) PKUJ) Punnett squareK) A) and E)
L) D) and E)

Question 16

The process by which gametes have their chromosome number reduced by half is called

Accepted Answer

A)   mitosis
B)   crossing-over
C)   meiosis
D)   linkageE) B) and C)
F) None of the above

Question 17

MATCHING
Match each term with its corresponding definition or description.
-gene that expresses itself whenever it is in a cell

Accepted Answer

A)  proteome
B)  crossing-over
C)  dominant gene
D)  gene
E)  p-armF) trisomyG) geneticsH) recessive geneI) genomeJ) q-armK) sex-linked traitL) genetic mutationM) monosomyN) autosomeO) nondisjunctionP) F) and N)
Q) A) and B)

Question 18

If both the mother and father are carriers for albinism,the probability that their offspring will be albino is

Accepted Answer

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

Question 19

What is a genetic mutation? List three possible genetic mutagens.

Accepted Answer

A genetic mutation is a change in the DN...

Question 20

If a creature normally has 32 chromosomes in its cells,the gametes it produces would have 16 chromosomes.

Accepted Answer

A) True 
 B)False

Exam 25: Genetics and Genetic Diseases

If both the mother and father are carriers for albinism,the probability that their offspring will be albino is

Correct AnswerverifiedShow Answer

Viruses and bacterial plasmids have been used to get genetic material into the cell to treat genetic diseases.

Correct AnswerverifiedShow Answer

The process by which gametes have their chromosome number reduced by half is called

Correct AnswerverifiedShow Answer

PKU can be managed by careful dietary restrictions of certain amino acids.

Correct AnswerverifiedShow Answer

Tay-Sachs disease is caused by a failure to make an enzyme that converts an amino acid into tyrosine.

Correct AnswerverifiedShow Answer

All mutations are harmful to the organism.

Correct AnswerverifiedShow Answer

The first step in gene expression is the formation of a molecule of mRNA.

Correct AnswerverifiedShow Answer

What is a genetic mutation? List three possible genetic mutagens.

Correct AnswerAnswered by ExamLex AIA genetic mutation is a change in the DN...View AnswerShow Answer

Match each term with its corresponding definition or description. -a photograph of chromosomes that are cut out and pasted on a chart in pairs according to size

Correct AnswerverifiedShow Answer

If a creature normally has 32 chromosomes in its cells,the gametes it produces would have 16 chromosomes.

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MATCHING Match each term with its corresponding definition or description. -gene that expresses itself whenever it is in a cell

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A color-blind mother and a normal vision father will have both sons and daughters who are color-blind.

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Which of the following conditions results from monosomy?

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The structure that divides the chromosome into longer and shorter segments is called the

Correct AnswerverifiedShow Answer

What is a karyotype? Explain a situation in which it could be used for genetic counseling.

Correct AnswerAnswered by ExamLex AIA karyotype is a visual representation o...View AnswerShow Answer

A father and mother who both have normal skin color but carry the gene for albinism will have only offspring with normal skin color.

Correct AnswerverifiedShow Answer

MATCHING Match each term with its corresponding definition or description. -a non-sex chromosome

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The p-arm is the long segment of the chromosome.

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The human genome contains about how many genes?

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Match each term with its corresponding definition or description. -condition of people with XXY chromosomes

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