Question 1

When a segment from one chromosome is detached and reattached to a nonhomologous chromosome this is known as:

Accepted Answer

A)  Inversion 
B)  Translocation 
C)  Polyploidy 
D)  Trisomy 
E)  Monosomy 
A)  Inversion 
B)  Translocation 
C)  Polyploidy 
D)  Trisomy 
E)  Monosomy B

Question 2

When one chromosome is missing in an otherwise diploid individual,this is referred to as:

Accepted Answer

A)  Monosomy 
B)  Trisomy 
C)  Triploidy 
D)  Tetraploidy 
E)  Polyploidy 
A)  Monosomy 
B)  Trisomy 
C)  Triploidy 
D)  Tetraploidy 
E)  Polyploidy A

Question 3

A fertile tetraploid would best be characterized as having a(an):

Accepted Answer

A)  Two distinct sets of chromosomes with each set being duplicated 
B)  One distinct set of chromosomes that have been duplicated 
C)  Three distinct sets of chromosomes with each set being duplicated 
D)  Four distinct sets of chromosomes with each set being duplicated 
E)  None of these 
A)  Two distinct sets of chromosomes with each set being duplicated 
B)  One distinct set of chromosomes that have been duplicated 
C)  Three distinct sets of chromosomes with each set being duplicated 
D)  Four distinct sets of chromosomes with each set being duplicated 
E)  None of these A

Question 4

Briefly explain how a pericentric inversion is different from a paracentric inversion and what effect each would have on a chromosome.

Accepted Answer

Pericentric inversions include the centr

Question 5

The most common cause for trisomy events in human beings is:

Accepted Answer

A)  Normal disjunction during meiosis 
B)  Non-disjunction during meiosis 
C)  Normal disjunction during oogenesis 
D)  Normal disjunction during spermatogenesis 
E)  None of these is a cause for trisomy 
A)  Normal disjunction during meiosis 
B)  Non-disjunction during meiosis 
C)  Normal disjunction during oogenesis 
D)  Normal disjunction during spermatogenesis 
E)  None of these is a cause for trisomy

Question 6

Which of the following is true regarding polytene chromosomes in Drosophila? 1.Homologous polytene chromosomes pair
2)All the centromeres of Drosophila polytene chromosomes congeal into a body called the chromocenter
3)Homologous chromosomes do not pair because they are in somatic cells

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  1 and 2 
E)  1 and 3 
A)  1 
B)  2 
C)  3 
D)  1 and 2 
E)  1 and 3

Question 7

An individual who possesses one inverted chromosome and one that is not inverted is said to be a/an:

Accepted Answer

A)  Inversion heterozygote 
B)  Inversion mutant 
C)  Inversion homozygote 
D)  All of these 
E)  None of these 
A)  Inversion heterozygote 
B)  Inversion mutant 
C)  Inversion homozygote 
D)  All of these 
E)  None of these

Question 8

Why does cruciform pairing often lead to non-disjunction events causing the formation of aneuploidy gametes?

Accepted Answer

Because cruciform pairing involves four

Question 9

Polyploids created from a hybridization between different species are known as:

Accepted Answer

A)  Autopolyploids 
B)  Allopolyploids 
C)  Triploids 
D)  Tetraploids 
E)  None of these 
A)  Autopolyploids 
B)  Allopolyploids 
C)  Triploids 
D)  Tetraploids 
E)  None of these

Question 10

Which of the following individuals exhibits aneuploidy? 1.An individual who is missing a chromosome
2)An individual who has gained an extra chromosome
3)An individual who is missing a portion of a chromosome

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  1 and 2 
E)  All of these 
A)  1 
B)  2 
C)  3 
D)  1 and 2 
E)  All of these

Question 11

A DNA fragment that interacts with the complementary sequence of DNA on the chromosome is known as a(an):

Accepted Answer

A)  Probe 
B)  Fingerprint 
C)  Fluorescent dye 
D)  Probe and fingerprint 
E)  All of these 
A)  Probe 
B)  Fingerprint 
C)  Fluorescent dye 
D)  Probe and fingerprint 
E)  All of these

Question 12

Which of the following disorders is not caused by a trisomy in human beings?

Accepted Answer

A)  Down Syndrome 
B)  Patau's Syndrome 
C)  Turner's Syndrome 
D)  Edwards Syndrome 
E)  Triplo-X Syndrome 
A)  Down Syndrome 
B)  Patau's Syndrome 
C)  Turner's Syndrome 
D)  Edwards Syndrome 
E)  Triplo-X Syndrome

Question 13

Which of the following is a method that could result in a polyploid organism 1.A cell could go through mitosis without going through cytokinesis.
2)A cell could go through meiosis without properly separating the homologous pairs
3)A cell could go through mitosis while doubling the rounds of cytokinesis

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  1 and 2 
E)  2 and 3 
A)  1 
B)  2 
C)  3 
D)  1 and 2 
E)  2 and 3

Question 14

Which of the following is a difference between compound chromosomes and translocations? 1.Compound chromosomes involve fusions of homologous chromosome segments
2)Compound chromosomes involve fusions of non-homologous chromosome segments
3)Translocations involve fusion of non-homologous chromosome segments

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  1 and 2 
E)  1 and 3 
A)  1 
B)  2 
C)  3 
D)  1 and 2 
E)  1 and 3

Question 15

Which of the following is a method of asexually propagating sterile polyploids?

Accepted Answer

A)  Apomixis 
B)  Cultivation from cuttings 
C)  Bulbs 
D)  Grafts 
E)  All of these 
A)  Apomixis 
B)  Cultivation from cuttings 
C)  Bulbs 
D)  Grafts 
E)  All of these

Question 16

Which of the following organisms is best known for its polytene chromosomes?

Accepted Answer

A)  C. elegans 
B)  Drosophila 
C)  Human kidney cells 
D)  Human liver cells 
E)  None of these 
A)  C. elegans 
B)  Drosophila 
C)  Human kidney cells 
D)  Human liver cells 
E)  None of these

Question 17

Which type of cell is most often used by researchers?

Accepted Answer

A)  Dividing cells 
B)  Non-dividing cells 
C)  Apoptosing cells 
D)  None of these 
E)  All of these 
A)  Dividing cells 
B)  Non-dividing cells 
C)  Apoptosing cells 
D)  None of these 
E)  All of these

Question 18

Why are many polyploids sterile?

Accepted Answer

A)  Extra sets of chromosomes segregate irregularly in meiosis leading to aneuploidic gametes 
B)  Extra sets of chromosomes segregate regularly in meiosis leading to aneuploidic gametes 
C)  Extra sets of chromosomes segregate irregularly in mitosis leading to aneuploidic gametes 
D)  All of these 
E)  None of these 
A)  Extra sets of chromosomes segregate irregularly in meiosis leading to aneuploidic gametes 
B)  Extra sets of chromosomes segregate regularly in meiosis leading to aneuploidic gametes 
C)  Extra sets of chromosomes segregate irregularly in mitosis leading to aneuploidic gametes 
D)  All of these 
E)  None of these

Question 19

The short arm of the chromosome is designated:

Accepted Answer

A)  P 
B)  Q 
C)  L 
D)  M 
E)  N 
A)  P 
B)  Q 
C)  L 
D)  M 
E)  N

Question 20

A pictorial chart of chromosomes arranged from largest to smallest is known as a(an):

Accepted Answer

A)  Karyotype 
B)  Genetic analysis 
C)  Pedigree chart 
D)  Amniocentesis 
E)  Chorionic villus sample 
A)  Karyotype 
B)  Genetic analysis 
C)  Pedigree chart 
D)  Amniocentesis 
E)  Chorionic villus sample

Exam 6: Variation In Chromosome Number And Structure

When a segment from one chromosome is detached and reattached to a nonhomologous chromosome this is known as:

When one chromosome is missing in an otherwise diploid individual,this is referred to as:

A fertile tetraploid would best be characterized as having a(an):

Briefly explain how a pericentric inversion is different from a paracentric inversion and what effect each would have on a chromosome.

The most common cause for trisomy events in human beings is:

Which of the following is true regarding polytene chromosomes in Drosophila? 1.Homologous polytene chromosomes pair 2)All the centromeres of Drosophila polytene chromosomes congeal into a body called the chromocenter 3)Homologous chromosomes do not pair because they are in somatic cells

An individual who possesses one inverted chromosome and one that is not inverted is said to be a/an:

Why does cruciform pairing often lead to non-disjunction events causing the formation of aneuploidy gametes?

Polyploids created from a hybridization between different species are known as:

Which of the following individuals exhibits aneuploidy? 1.An individual who is missing a chromosome 2)An individual who has gained an extra chromosome 3)An individual who is missing a portion of a chromosome

A DNA fragment that interacts with the complementary sequence of DNA on the chromosome is known as a(an):

Which of the following disorders is not caused by a trisomy in human beings?

Which of the following is a method of asexually propagating sterile polyploids?

Which of the following organisms is best known for its polytene chromosomes?

Which type of cell is most often used by researchers?

Why are many polyploids sterile?

The short arm of the chromosome is designated:

A pictorial chart of chromosomes arranged from largest to smallest is known as a(an):

The Science Of Genetics

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Mendelism The Basic Principles Of Inheritance

Extensions Of Mendelism

The Chromosomal Basis Of Mendelism

Linkage,Crossing Over,And Chromosome Mapping In …

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DNA And The Molecular Structure Of Chromosomes

Replication Of DNA And Chromosomes

Transcription And RNA Processing

Translation And The Genetic Code

Mutation,DNA Repair,And Recombination

The Techniques Of Molecular Genetics

Genomics

Applications Of Molecular Genetics

Transposable Genetics Elements

Regulation Of Gene Expression In Prokaryotes

Regulation Of Gene Expression In Eukaryotes

The Genetic Control Of Animal Development

The Genetic Basis Of Cancer

Inheritance Of Complex Traits

Population Genetics

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