Question 1

Considering that males can have Klinefelter (XXY) syndrome,XYY,and normal XY chromosomal combinations,and females can have Turner (XO) syndrome,poly-X (XXX,XXXX) ,and normal XX combinations,it is obvious that

Accepted Answer

A)   maleness results from the presence of only one X chromosome.
B)   maleness results from the absence of two or more X chromosomes.
C)   maleness results from the minimal presence of one Y chromosome.
D)   femaleness results from the presence of two or more X chromosomes.
E)   sex determination is a delicate balance between X and Y chromosomes.F) A) and E)
G) A) and C)

Question 2

A female with two Barr bodies in her cells would have what combination of sex chromosomes?

Accepted Answer

A)   XXY
B)   XXXY
C)   XXX
D)   XX
E)   XYYF) C) and D)
G) A) and E)

Question 3

Describe a genetic disorder associated with a deletion in chromosomal number.

Accepted Answer

Williams syndrome occurs when chromosome...

Question 4

A karyotype will NOT reveal which of the following genetic diseases?

Accepted Answer

A)   Turner syndrome
B)   Klinefelter syndrome
C)   Down syndrome
D)   cri du chat syndrome
E)   hemophiliaF) C) and D)
G) B) and C)

Question 5

List the four X-linked recessive disorders.

Accepted Answer

1.Color blindness
2....

Question 6

Karyotyping can be used to diagnose which of the following genetic disorders?

Accepted Answer

A)   Down syndrome
B)   phenylketonuria
C)   neurofibromatosis
D)   cystic fibrosis
E)   hemophiliaF) C) and D)
G) A) and B)

Question 7

A person who has an extra copy of a chromosome is said to have

Accepted Answer

A)   monosomy.
B)   bisomy.
C)   trisomy.
D)   nondisjunction.
E)   duplication.F) B) and C)
G) C) and D)

Question 8

Which refers to the addition of a repeat segment of a chromosome?

Accepted Answer

A)   inversion
B)   translocation
C)   deletion
D)   duplication
E)   monosomyF) A) and B)
G) B) and C)

Question 9

All of the genes on a single chromosome are

Accepted Answer

A)   A locus
B)   Homologous
C)   A linkage map
D)   A linkage group
E)   An alleleF) All of the above
G) A) and C)

Question 10

An XXX female would most likely result from nondisjunction in

Accepted Answer

A)   the mother during egg formation.
B)   the father during sperm formation
C)   in both the mother and father during gamete formation.
D)   the fertilized egg.
E)   neither the mother nor the father.F) A) and B)
G) B) and C)

Question 11

Which genetic trait is NOT associated with the chromosome involved in Down syndrome?

Accepted Answer

A)   increased incidence of leukemia
B)   cataracts
C)   mental retardation
D)   accelerated aging
E)   cystic fibrosisF) B) and E)
G) None of the above

Question 12

An individual who has an XXY combination of sex chromosomes is said to have _____ syndrome.

Accepted Answer

A)   Klinefelter
B)   Turner
C)   Down
D)   fragile X
E)   cri du chatF) A) and E)
G) A) and C)

Question 13

Which of the following is NOT true about a karyotype?

Accepted Answer

A)   Homologous chromosomes are arranged in pairs.
B)   Sex chromosomes are identified separately from autosomes.
C)   All chromosome pairs are numbered differently for males and females.
D)   Chromosome pairs are assorted by both size and shape.
E)   Banding patterns are used in pairing chromosomes.F) A) and D)
G) C) and D)

Question 14

Genes on the ___ chromosome determine if the sex of a child will be male or female.

Accepted Answer

A)   X
B)   Y
C)   21st
D)   5th
E)   19thF) B) and E)
G) B) and D)

Question 15

If a person inherits two X chromosomes,this individual will be

Accepted Answer

A)   female.
B)   male.
C)   colorblind.
D)   sterile.
E)   a poly-X female.F) A) and B)
G) A) and C)

Question 16

A colorblind (recessive trait) woman will pass the allele to

Accepted Answer

A)   her sons only.
B)   all her children.
C)   her daughters only.
D)   none of her children.
E)   her husband.F) A) and E)
G) B) and C)

Question 17

Among the disorders caused by changes in chromosome structure are all but one of those listed below; that one is

Accepted Answer

A)   Fragile X syndrome
B)   Klinefelter syndrome
C)   Williams syndrome
D)   Cri du chat syndrome
E)   All of these are caused by a change in chromosome structureF) None of the above
G) B) and E)

Question 18

If a woman is a carrier for the color blind recessive allele and her husband is normal,what are their chances that a son will be color blind?

Accepted Answer

A)   None since the father is normal.
B)   50%, since the mother is only a carrier.
C)   100% because the mother has the gene.
D)   25% because the mother is a hybrid.
E)   None since the son will also be just a carrier.F) C) and D)
G) None of the above

Exam 24: Chromosomal Basis of Inheritance

Among the disorders caused by changes in chromosome structure are all but one of those listed below; that one is

Correct Answer
verified

Considering that males can have Klinefelter (XXY) syndrome,XYY,and normal XY chromosomal combinations,and females can have Turner (XO) syndrome,poly-X (XXX,XXXX) ,and normal XX combinations,it is obvious that

Correct Answer
verified

A karyotype will NOT reveal which of the following genetic diseases?

Correct Answer
verified

Karyotyping can be used to diagnose which of the following genetic disorders?

Correct Answer
verified

An XXX female would most likely result from nondisjunction in

Correct Answer
verified

All of the genes on a single chromosome are

Correct Answer
verified

If a person inherits two X chromosomes,this individual will be

Correct Answer
verified

A person who has an extra copy of a chromosome is said to have

Correct Answer
verified

Which genetic trait is NOT associated with the chromosome involved in Down syndrome?

Correct Answer
verified

If a woman is a carrier for the color blind recessive allele and her husband is normal,what are their chances that a son will be color blind?

Correct Answer
verified

Which of the following is NOT true about a karyotype?

Correct Answer
verified

A colorblind (recessive trait) woman will pass the allele to

Correct Answer
verified

An individual who has an XXY combination of sex chromosomes is said to have _____ syndrome.

Correct Answer
verified

Describe a genetic disorder associated with a deletion in chromosomal number.

Correct Answer
verified
Williams syndrome occurs when chromosome...
View Answer

A female with two Barr bodies in her cells would have what combination of sex chromosomes?

Correct Answer
verified

Genes on the ___ chromosome determine if the sex of a child will be male or female.

Correct Answer
verified

Which refers to the addition of a repeat segment of a chromosome?

Correct Answer
verified

List the four X-linked recessive disorders.

Correct Answer
verified
1.Color blindness
2....
View Answer

Exam 24: Chromosomal Basis of Inheritance

Among the disorders caused by changes in chromosome structure are all but one of those listed below; that one is

Correct AnswerverifiedShow Answer

Considering that males can have Klinefelter (XXY) syndrome,XYY,and normal XY chromosomal combinations,and females can have Turner (XO) syndrome,poly-X (XXX,XXXX) ,and normal XX combinations,it is obvious that

Correct AnswerverifiedShow Answer

A karyotype will NOT reveal which of the following genetic diseases?

Correct AnswerverifiedShow Answer

Karyotyping can be used to diagnose which of the following genetic disorders?

Correct AnswerverifiedShow Answer

An XXX female would most likely result from nondisjunction in

Correct AnswerverifiedShow Answer

All of the genes on a single chromosome are

Correct AnswerverifiedShow Answer

If a person inherits two X chromosomes,this individual will be

Correct AnswerverifiedShow Answer

A person who has an extra copy of a chromosome is said to have

Correct AnswerverifiedShow Answer

Which genetic trait is NOT associated with the chromosome involved in Down syndrome?

Correct AnswerverifiedShow Answer

If a woman is a carrier for the color blind recessive allele and her husband is normal,what are their chances that a son will be color blind?

Correct AnswerverifiedShow Answer

Which of the following is NOT true about a karyotype?

Correct AnswerverifiedShow Answer

A colorblind (recessive trait) woman will pass the allele to

Correct AnswerverifiedShow Answer

An individual who has an XXY combination of sex chromosomes is said to have _____ syndrome.

Correct AnswerverifiedShow Answer

Describe a genetic disorder associated with a deletion in chromosomal number.

Correct AnswerverifiedWilliams syndrome occurs when chromosome...View AnswerShow Answer

A female with two Barr bodies in her cells would have what combination of sex chromosomes?

Correct AnswerverifiedShow Answer

Genes on the ___ chromosome determine if the sex of a child will be male or female.

Correct AnswerverifiedShow Answer

Which refers to the addition of a repeat segment of a chromosome?

Correct AnswerverifiedShow Answer

List the four X-linked recessive disorders.

Correct Answerverified1.Color blindness2....View AnswerShow Answer

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Williams syndrome occurs when chromosome...
View Answer

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verified

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verified

Correct Answer
verified

Correct Answer
verified
1.Color blindness
2....
View Answer