Question 1

The chromosome shorthand _____ is used to designate a normal male.

Accepted Answer

A) 45,X 
B) 46,XX 
C) 46,XY 
D) 47,XXY 
A) 45,X 
B) 46,XX 
C) 46,XY 
D) 47,XXY C

Question 2

Chorionic villus sampling reveals a fetus has the karyotype 47,XYY.What is the diagnosis?

Accepted Answer

A) Normal female 
B) Klinefelter syndrome 
C) Edward syndrome 
D) Jacobs syndrome 
A) Normal female 
B) Klinefelter syndrome 
C) Edward syndrome 
D) Jacobs syndrome D

Question 3

The type of chromosome abnormality that yields a long chromosome consisting of most of two acrocentric chromosomes is a(n)

Accepted Answer

A) Robertsonian translocation. 
B) pericentric inversion. 
C) paracentric inverson. 
D) reciprocal translocation. 
A) Robertsonian translocation. 
B) pericentric inversion. 
C) paracentric inverson. 
D) reciprocal translocation. A

Question 4

A chromosome consists of

Accepted Answer

A) mostly protein and RNA with a small amount of DNA. 
B) mostly DNA and proteins with a small amount of RNA. 
C) about equal proportions of DNA,RNA,and protein. 
D) DNA only. 
A) mostly protein and RNA with a small amount of DNA. 
B) mostly DNA and proteins with a small amount of RNA. 
C) about equal proportions of DNA,RNA,and protein. 
D) DNA only.

Question 5

Spindle fibers (microtubules)attach to a chromosome's _____ during mitosis.

Accepted Answer

A) centromere 
B) telomere 
C) genomere 
D) euchromatin 
A) centromere 
B) telomere 
C) genomere 
D) euchromatin

Question 6

Polyploidy can result when

Accepted Answer

A) a translocation occurs between two chromosomes. 
B) one pair of homologous chromosomes does not separate during meiosis. 
C) a developing gamete is haploid. 
D) a haploid sperm fertilizes a diploid egg. 
A) a translocation occurs between two chromosomes. 
B) one pair of homologous chromosomes does not separate during meiosis. 
C) a developing gamete is haploid. 
D) a haploid sperm fertilizes a diploid egg.

Question 7

To observe chromosomes,they must be

Accepted Answer

A) actively transcribing all of their genes. 
B) actively transcribing some of their genes. 
C) condensed. 
D) in interphase. 
A) actively transcribing all of their genes. 
B) actively transcribing some of their genes. 
C) condensed. 
D) in interphase.

Question 8

A cell that has three copies of every chromosome is

Accepted Answer

A) euploid. 
B) triploid. 
C) aneuploid. 
D) tetraploiD. 
A) euploid. 
B) triploid. 
C) aneuploid. 
D) tetraploiD.

Question 9

In the earliest karyotypes,chromosomes were distinguished by

Accepted Answer

A) specific size order. 
B) general size classes. 
C) banding patterns. 
D) stage of the cell cycle. 
A) specific size order. 
B) general size classes. 
C) banding patterns. 
D) stage of the cell cycle.

Question 10

Uniparental disomy explains

Accepted Answer

A) a person with dwarfism who has autosomal dominant achondroplasia born to parents of normal height. 
B) some cases of severe blood infections. 
C) a new mutation in which a child has a condition that no other relative has. 
D) a child with an autosomal recessive condition who has one wild type parent and one carrier parent. 
A) a person with dwarfism who has autosomal dominant achondroplasia born to parents of normal height. 
B) some cases of severe blood infections. 
C) a new mutation in which a child has a condition that no other relative has. 
D) a child with an autosomal recessive condition who has one wild type parent and one carrier parent.

Question 11

Which of these has never been observed in a viable human birth?

Accepted Answer

A) YO male 
B) XO female 
C) XXY male 
D) XXX female 
A) YO male 
B) XO female 
C) XXY male 
D) XXX female

Question 12

Chromosomes in karyotypes are arranged and ordered by

Accepted Answer

A) telomere length. 
B) centromere position. 
C) length. 
D) width. 
A) telomere length. 
B) centromere position. 
C) length. 
D) width.

Question 13

A karyotype that uses FISH that shows two chromosomes,each with two colors,but in the opposite patterns,most likely indicates a

Accepted Answer

A) Robertsonian translocation. 
B) pericentric inversion. 
C) paracentric inverson. 
D) reciprocal translocation. 
A) Robertsonian translocation. 
B) pericentric inversion. 
C) paracentric inverson. 
D) reciprocal translocation.

Question 14

Which type of cell could not be used for karyotyping?

Accepted Answer

A) Red blood cell 
B) White blood cell 
C) Fibroblast 
D) Skin cell 
A) Red blood cell 
B) White blood cell 
C) Fibroblast 
D) Skin cell

Question 15

A man with trisomy 21 could pass Down syndrome to offspring if he

Accepted Answer

A) produces sperm that have two copies of chromosome 21. 
B) produces sperm lacking chromosome 21. 
C) also has Turner syndrome. 
D) is a carrier of a deletion for chromosome 21. 
A) produces sperm that have two copies of chromosome 21. 
B) produces sperm lacking chromosome 21. 
C) also has Turner syndrome. 
D) is a carrier of a deletion for chromosome 21.

Question 16

The areas between the protein-rich parts of a chromosome and the telomeres are called
3-26-2013

Accepted Answer

A) submetacentric. 
B) subtelomeres. 
C) subcentromeres. 
D) subchromatin. 
A) submetacentric. 
B) subtelomeres. 
C) subcentromeres. 
D) subchromatin.

Question 17

Heterochromatic regions at the ends of chromosomes are

Accepted Answer

A) centromeres. 
B) euchromatin. 
C) telomeres. 
D) DNA hubs. 
A) centromeres. 
B) euchromatin. 
C) telomeres. 
D) DNA hubs.

Question 18

The technique called fluorescence in situ hybridization (FISH)uses

Accepted Answer

A) stains to sort chromosomes into general size classes,designated A through G. 
B) DNA probes with attached fluorescent molecules that indicate specific DNA sequences. 
C) lures to pull out specific sequences from their chromosomes. 
D) stains that distinguish AT-rich from GC-rich sequences. 
A) stains to sort chromosomes into general size classes,designated A through G. 
B) DNA probes with attached fluorescent molecules that indicate specific DNA sequences. 
C) lures to pull out specific sequences from their chromosomes. 
D) stains that distinguish AT-rich from GC-rich sequences.

Question 19

_____ syndrome can only result from non-disjunction in the male and female.

Accepted Answer

A) YO 
B) XO 
C) XXY 
D) XXYY syndrome 
A) YO 
B) XO 
C) XXY 
D) XXYY syndrome

Question 20

_____ are illustrations that show chromosome arm and major regions.

Accepted Answer

A) Ideograms 
B) Chromatograms 
C) Polygrams 
D) Anagrams 
A) Ideograms 
B) Chromatograms 
C) Polygrams 
D) Anagrams

Exam 13: Chromosomes

The chromosome shorthand _____ is used to designate a normal male.

Chorionic villus sampling reveals a fetus has the karyotype 47,XYY.What is the diagnosis?

The type of chromosome abnormality that yields a long chromosome consisting of most of two acrocentric chromosomes is a(n)

A chromosome consists of

Spindle fibers (microtubules)attach to a chromosome's _____ during mitosis.

Polyploidy can result when

To observe chromosomes,they must be

A cell that has three copies of every chromosome is

In the earliest karyotypes,chromosomes were distinguished by

Uniparental disomy explains

Which of these has never been observed in a viable human birth?

Chromosomes in karyotypes are arranged and ordered by

A karyotype that uses FISH that shows two chromosomes,each with two colors,but in the opposite patterns,most likely indicates a

Which type of cell could not be used for karyotyping?

A man with trisomy 21 could pass Down syndrome to offspring if he

The areas between the protein-rich parts of a chromosome and the telomeres are called 3-26-2013

Heterochromatic regions at the ends of chromosomes are

The technique called fluorescence in situ hybridization (FISH)uses

_____ syndrome can only result from non-disjunction in the male and female.

_____ are illustrations that show chromosome arm and major regions.

What Is in a Human Genome

Cells

Meiosis,Development and Aging

Single-Gene Inheritance

Beyond Mendels Laws

Matters of Sex

Multifactorial Traits

Genetics of Behavior

DNA Structure and Replication

Gene Action: From DNA to Protein

Gene Expression and Epigenetics

Gene Mutation

Constant Allele Frequencies

Changing Allele Frequencies

Human Ancestry and Evolution

Genetics of Immunity

Cancer Genetics and Genomics

Genetic Technologies: Patenting, modifying, and Monitoring Dna

Genetic Testing and Treatment

Reproductive Technologies

Genomics

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