Question 1

What are the possible effects of transposable elements on gene function,and how do these relate to evolution?

Accepted Answer

The insertion of a transposable element ...

Question 2

Which of the following would be most difficult to identify by comparative genomic hybridization (CGH) ?

Accepted Answer

A)   duplication
B)   deletion
C)   monosomy
D)   base substitution
E)   trisomyF) A) and E)
G) C) and D)

Question 3

Explain the differences between chromosomal rearrangements and changes in chromosome number.Cite at least one example of each.

Accepted Answer

Chromosomal rearrangements reorganize th...

Question 4

What are LINEs and SINEs?

Accepted Answer

LINEs are long interspersed elements and...

Question 5

Of the following segregation patterns,which one is most likely to result in a normal zygote?

Accepted Answer

A)   alternate
B)   adjacent-1
C)   adjacent-2
D)   nondisjunction
E)   triploidF) None of the above
G) C) and E)

Question 6

The genus Triticale is a new genus of the various allopolyploid hybrids between wheat and rye.Some of the members of this genus show agricultural promise because

Accepted Answer

A)   wheat has a high yield.
B)   rye adapts well to unfavorable environments.
C)   wheat has a high level of protein.
D)   rye has a high level of lysine.
E)   All of the choices are correct.F) B) and E)
G) B) and D)

Question 7

An acentric fragment is an inversion crossover product lacking a centromere.

Accepted Answer

A) True 
 B)False

Question 8

Which of the following is most likely to produce a chromosomal inversion?

Accepted Answer

A)   aneuploidy
B)   one double-strand breakage on each of two different chromosomes
C)   transposition of a retrotransposon
D)   double-strand breakage at two positions on the same chromosomes
E)   Robertsonian translocationF) B) and C)
G) B) and D)

Question 9

In Drosophila,a gynandromorph,which is composed of equal parts of male and female tissue,results from

Accepted Answer

A)   an XX female losing one X chromosome during the first mitotic division after fertilization.
B)   an egg carrying an X chromosome fertilized by a Y-carrying sperm.
C)   a normal egg fertilized by both an X-carrying sperm and a Y-carrying sperm.
D)   the fusion of a female embryo with a male embryo.
E)   the fusion of a female egg by an XX sperm.F) C) and D)
G) A) and D)

Question 10

Which of the following does not happen when an intragenic inversion occurs?

Accepted Answer

A)   One part of the gene is relocated to a distant region of the chromosome.
B)   One part of the gene stays at its original site.
C)   One part of the gene is relocated to another chromosome.
D)   The gene's function remains unaffected.
E)   The length of the chromosome remains unaffected.F) A) and C)
G) A) and B)

Question 11

Turner syndrome,XO,is a sex chromosome aneuploidy.Of the effects listed below,which one is not usually seen in this syndrome?

Accepted Answer

A)   unusually short stature
B)   infertility
C)   skeletal abnormalities
D)   unusually long limbs
E)   abnormal karyotypeF) D) and E)
G) C) and D)

Question 12

During the pairing of homologues in prophase of meiosis I,the region of a normal,nondeleted chromosome that has nothing with which to recombine forms a so-called

Accepted Answer

A)   inversion loop.
B)   deletion heterozygote.
C)   crossover suppressor.
D)   D loop.
E)   deletion loop.F) A) and C)
G) B) and E)

Question 13

We now know that several organisms have a high degree of synteny at the genomic level.You wish to test the hypothesis that the laboratory mouse and humans share genomic similarities.What tests would you complete and given that we now know that the mouse and human genomes are highly syntenic,what results would you expect?

Accepted Answer

Karyotype analysis can be used to test t...

Question 14

Which of the following sex chromosome aneuploidies is not usually seen in live births?

Accepted Answer

A)   XO
B)   XXY
C)   YO
D)   XXX
E)   None of the choices are correct.F) All of the above
G) B) and E)

Question 15

Despite selection against chromosomal variations

Accepted Answer

A)   related species almost always have the same karyotype.
B)   total DNA content varies widely between individuals within the same species.
C)   closely related species diverge by many chromosomal rearrangements.
D)   distantly related species diverge by only a few chromosomal rearrangements.
E)   related species almost always have a different karyotype.F) A) and B)
G) B) and D)

Question 16

In general,which of the following usually has a greater chance of lethality than the others?

Accepted Answer

A)   inversion
B)   duplication
C)   deletion
D)   translocation
E)   transcriptionF) A) and E)
G) None of the above

Question 17

The various types of transposable elements have many things in common.Which of the following is not a usual characteristic of them?

Accepted Answer

A)   larger than 50 kb
B)   may be present in a genome from one to thousands of times
C)   found only in a select group of organisms
D)   need not be sequences that do something for the organism
E)   can alter gene expressionF) C) and E)
G) B) and E)

Question 18

Explain how data from the linkage groups of the mouse can be used as a resource for assessing human linkage groups.

Accepted Answer

Because virtually all genes cloned from ...

Question 19

In terms of evolution,what is the most significant outcome of translocation in a species' genome?

Accepted Answer

A)   production of gene families
B)   development of two species due to reproductive isolation
C)   eventual extinction due to semisterility
D)   Down syndrome
E)   Klinefelter syndromeF) A) and D)
G) C) and D)

Question 20

A hallmark of transposons is that their ends are inverted repeats of each other.

Accepted Answer

A) True 
 B)False

Exam 8: Digital Analysis of Genomes

In terms of evolution,what is the most significant outcome of translocation in a species' genome?

Correct Answer
verified

Explain how data from the linkage groups of the mouse can be used as a resource for assessing human linkage groups.

Correct Answer
verified
Because virtually all genes cloned from ...
View Answer

Which of the following does not happen when an intragenic inversion occurs?

Correct Answer
verified

An acentric fragment is an inversion crossover product lacking a centromere.

Correct Answer
verified

Despite selection against chromosomal variations

Correct Answer
verified

Turner syndrome,XO,is a sex chromosome aneuploidy.Of the effects listed below,which one is not usually seen in this syndrome?

Correct Answer
verified

The genus Triticale is a new genus of the various allopolyploid hybrids between wheat and rye.Some of the members of this genus show agricultural promise because

Correct Answer
verified

Correct Answer
verified
Karyotype analysis can be used to test t...
View Answer

Which of the following would be most difficult to identify by comparative genomic hybridization (CGH) ?

Correct Answer
verified

The various types of transposable elements have many things in common.Which of the following is not a usual characteristic of them?

Correct Answer
verified

During the pairing of homologues in prophase of meiosis I,the region of a normal,nondeleted chromosome that has nothing with which to recombine forms a so-called

Correct Answer
verified

What are the possible effects of transposable elements on gene function,and how do these relate to evolution?

Correct Answer
verified
The insertion of a transposable element ...
View Answer

Of the following segregation patterns,which one is most likely to result in a normal zygote?

Correct Answer
verified

Which of the following is most likely to produce a chromosomal inversion?

Correct Answer
verified

Which of the following sex chromosome aneuploidies is not usually seen in live births?

Correct Answer
verified

In Drosophila,a gynandromorph,which is composed of equal parts of male and female tissue,results from

Correct Answer
verified

Explain the differences between chromosomal rearrangements and changes in chromosome number.Cite at least one example of each.

Correct Answer
verified
Chromosomal rearrangements reorganize th...
View Answer

A hallmark of transposons is that their ends are inverted repeats of each other.

Correct Answer
verified

In general,which of the following usually has a greater chance of lethality than the others?

Correct Answer
verified

What are LINEs and SINEs?

Correct Answer
verified
LINEs are long interspersed elements and...
View Answer

Exam 8: Digital Analysis of Genomes

In terms of evolution,what is the most significant outcome of translocation in a species' genome?

Correct AnswerverifiedShow Answer

Explain how data from the linkage groups of the mouse can be used as a resource for assessing human linkage groups.

Correct AnswerverifiedBecause virtually all genes cloned from ...View AnswerShow Answer

Which of the following does not happen when an intragenic inversion occurs?

Correct AnswerverifiedShow Answer

An acentric fragment is an inversion crossover product lacking a centromere.

Correct AnswerverifiedShow Answer

Despite selection against chromosomal variations

Correct AnswerverifiedShow Answer

Turner syndrome,XO,is a sex chromosome aneuploidy.Of the effects listed below,which one is not usually seen in this syndrome?

Correct AnswerverifiedShow Answer

The genus Triticale is a new genus of the various allopolyploid hybrids between wheat and rye.Some of the members of this genus show agricultural promise because

Correct AnswerverifiedShow Answer

Correct AnswerverifiedKaryotype analysis can be used to test t...View AnswerShow Answer

Which of the following would be most difficult to identify by comparative genomic hybridization (CGH) ?

Correct AnswerverifiedShow Answer

The various types of transposable elements have many things in common.Which of the following is not a usual characteristic of them?

Correct AnswerverifiedShow Answer

During the pairing of homologues in prophase of meiosis I,the region of a normal,nondeleted chromosome that has nothing with which to recombine forms a so-called

Correct AnswerverifiedShow Answer

What are the possible effects of transposable elements on gene function,and how do these relate to evolution?

Correct AnswerverifiedThe insertion of a transposable element ...View AnswerShow Answer

Of the following segregation patterns,which one is most likely to result in a normal zygote?

Correct AnswerverifiedShow Answer

Which of the following is most likely to produce a chromosomal inversion?

Correct AnswerverifiedShow Answer

Which of the following sex chromosome aneuploidies is not usually seen in live births?

Correct AnswerverifiedShow Answer

In Drosophila,a gynandromorph,which is composed of equal parts of male and female tissue,results from

Correct AnswerverifiedShow Answer

Explain the differences between chromosomal rearrangements and changes in chromosome number.Cite at least one example of each.

Correct AnswerverifiedChromosomal rearrangements reorganize th...View AnswerShow Answer

A hallmark of transposons is that their ends are inverted repeats of each other.

Correct AnswerverifiedShow Answer

In general,which of the following usually has a greater chance of lethality than the others?

Correct AnswerverifiedShow Answer

What are LINEs and SINEs?

Correct AnswerverifiedLINEs are long interspersed elements and...View AnswerShow Answer

Correct Answer
verified

Correct Answer
verified
Because virtually all genes cloned from ...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Karyotype analysis can be used to test t...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
The insertion of a transposable element ...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Chromosomal rearrangements reorganize th...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
LINEs are long interspersed elements and...
View Answer