Question 1

Which of the following features do bacterial and corn transposons not have in common?

Accepted Answer

A) Both may cause unstable mutations. 
B) Both may carry drug resistance genes in natural populations. 
C) Both may have inverted repeats. 
D) Both may move to new loci. 
E) Both may cause rearrangements. 
A) Both may cause unstable mutations. 
B) Both may carry drug resistance genes in natural populations. 
C) Both may have inverted repeats. 
D) Both may move to new loci. 
E) Both may cause rearrangements.

Question 2

Retroviruses replicate using:

Accepted Answer

A) DNA polymerase. 
B) RNA polymerase. 
C) restriction endonuclease. 
D) reverse transcriptase. 
E) topoisomerase. 
A) DNA polymerase. 
B) RNA polymerase. 
C) restriction endonuclease. 
D) reverse transcriptase. 
E) topoisomerase.

Question 3

Match the following transposable elements with the species where it is found.
i.humans (A)Dt element
ii.Drosophila (B)Ty1 element
iii.yeast (C)L1 element
iv.maize (D)P element

Accepted Answer

i.(C),ii.(

Question 4

Which of the following statements is/are FALSE about Tc1 elements found in C.elegans?

Accepted Answer

A) Tc1 elements are retrotransposons. 
B) Tc1 elements can transpose only in somatic cells. 
C) Tc1 elements were used to study the RNAi based silencing mechanisms. 
D) Single Tc1 element can trigger the silencing of all copies of Tc1 elements in the C.elegans genome. 
E) None of the answer options are correct. 
A) Tc1 elements are retrotransposons. 
B) Tc1 elements can transpose only in somatic cells. 
C) Tc1 elements were used to study the RNAi based silencing mechanisms. 
D) Single Tc1 element can trigger the silencing of all copies of Tc1 elements in the C.elegans genome. 
E) None of the answer options are correct.

Question 5

Eukaryotic retrotransposons such as Ty1 and Copia are flanked by:

Accepted Answer

A) direct repeats (DRs). 
B) inverted repeats (IRs). 
C) long terminal repeats (LTRs). 
D) long inverted repeats (LIRs). 
E) None of the answer options are correct. 
A) direct repeats (DRs). 
B) inverted repeats (IRs). 
C) long terminal repeats (LTRs). 
D) long inverted repeats (LIRs). 
E) None of the answer options are correct.

Question 6

What percentage of the human genome is derived from transposable elements?

Accepted Answer

A) less than 5% 
B) 25% 
C) 50% 
D) 75% 
E) nearly 100% 
A) less than 5% 
B) 25% 
C) 50% 
D) 75% 
E) nearly 100%

Question 7

A corn plant is homozygous for a mutant allele that results in no pigment in the seed (i.e.,white).The mutant is caused by Ds insertion that often exits late in seed development,when there is an active Ac element in the genome.If there is NO active Ac element,the seeds of this plant will be:

Accepted Answer

A) no pigment (i.e. ,white). 
B) pigmented all over. 
C) white with small spots of pigment. 
D) white with large spots of pigment. 
E) weakly pigmented. 
A) no pigment (i.e. ,white). 
B) pigmented all over. 
C) white with small spots of pigment. 
D) white with large spots of pigment. 
E) weakly pigmented.

Question 8

Retrotransposons move via an intermediate that is:

Accepted Answer

A) a double-stranded lollipop. 
B) a retrovirus. 
C) double-stranded RNA. 
D) single-stranded DNA. 
E) single-stranded RNA. 
A) a double-stranded lollipop. 
B) a retrovirus. 
C) double-stranded RNA. 
D) single-stranded DNA. 
E) single-stranded RNA.

Question 9

Which of the following statements is/are TRUE about the miniature inverted repeat transposable elements (MITEs)?

Accepted Answer

A) MITEs are examples of retrotransposons. 
B) MITEs are examples of DNA transposons. 
C) MITEs can attain very high copy numbers in humans. 
D) MITEs contain transposase gene. 
E) None of the answer options are correct. 
A) MITEs are examples of retrotransposons. 
B) MITEs are examples of DNA transposons. 
C) MITEs can attain very high copy numbers in humans. 
D) MITEs contain transposase gene. 
E) None of the answer options are correct.

Question 10

A nonautonomous element:

Accepted Answer

A) requires no other elements for its mobility. 
B) requires additional element(s)for its mobility. 
C) is only found in corn (maize). 
D) is found only in plants. 
E) None of the answers are correct. 
A) requires no other elements for its mobility. 
B) requires additional element(s)for its mobility. 
C) is only found in corn (maize). 
D) is found only in plants. 
E) None of the answers are correct.

Question 11

An autonomous element:

Accepted Answer

A) requires no other elements for its mobility. 
B) requires one additional element(s)for its mobility. 
C) is only found in corn (maize). 
D) is found only in plants. 
E) None of the answer options are correct. 
A) requires no other elements for its mobility. 
B) requires one additional element(s)for its mobility. 
C) is only found in corn (maize). 
D) is found only in plants. 
E) None of the answer options are correct.

Question 12

Compare and contrast IS elements,simple transposons,and composite transposons.Use diagrams to help in the comparison.

Accepted Answer

IS element:
IS elements are short mobile

Which of the following features do bacterial and corn transposons not have in common?

Retroviruses replicate using:

Match the following transposable elements with the species where it is found. i.humans (A)Dt element ii.Drosophila (B)Ty1 element iii.yeast (C)L1 element iv.maize (D)P element

Which of the following statements is/are FALSE about Tc1 elements found in C.elegans?

Eukaryotic retrotransposons such as Ty1 and Copia are flanked by:

What percentage of the human genome is derived from transposable elements?

A corn plant is homozygous for a mutant allele that results in no pigment in the seed (i.e.,white).The mutant is caused by Ds insertion that often exits late in seed development,when there is an active Ac element in the genome.If there is NO active Ac element,the seeds of this plant will be:

Retrotransposons move via an intermediate that is:

Which of the following statements is/are TRUE about the miniature inverted repeat transposable elements (MITEs)?

A nonautonomous element:

An autonomous element:

Compare and contrast IS elements,simple transposons,and composite transposons.Use diagrams to help in the comparison.

The Genetics Revolution

Single-Gene Inheritance

Independent Assortment of Genes

Mapping Eukaryote Chromosomes by Recombination

The Genetics of Bacteria and Their Viruses

Gene Interaction

Dna: Structure and Replication

Rna: Transcription and Processing

Proteins and Their Synthesis

Gene Isolation and Manipulation

Regulation of Gene Expression in Bacteria and Their Viruses

Regulation of Gene Expression in Eukaryotes

The Genetic Control of Development

Genomes and Genomics

Mutation, Repair, and Recombination

Large-Scale Chromosomal Changes

Population Genetics

The Inheritance of Complex Traits

Evolution of Genes and Traits

Filters

Exam 15: The Dynamic Genome: Transposable Elements

Which of the following features do bacterial and corn transposons not have in common?

Retroviruses replicate using:

Match the following transposable elements with the species where it is found. i.humans (A)Dt element ii.Drosophila (B)Ty1 element iii.yeast (C)L1 element iv.maize (D)P element

Which of the following statements is/are FALSE about Tc1 elements found in C.elegans?

Eukaryotic retrotransposons such as Ty1 and Copia are flanked by:

What percentage of the human genome is derived from transposable elements?

A corn plant is homozygous for a mutant allele that results in no pigment in the seed (i.e.,white).The mutant is caused by Ds insertion that often exits late in seed development,when there is an active Ac element in the genome.If there is NO active Ac element,the seeds of this plant will be:

Retrotransposons move via an intermediate that is:

Which of the following statements is/are TRUE about the miniature inverted repeat transposable elements (MITEs)?

A nonautonomous element:

An autonomous element:

Compare and contrast IS elements,simple transposons,and composite transposons.Use diagrams to help in the comparison.

The Genetics Revolution

Single-Gene Inheritance

Independent Assortment of Genes

Mapping Eukaryote Chromosomes by Recombination

The Genetics of Bacteria and Their Viruses

Gene Interaction

Dna: Structure and Replication

Rna: Transcription and Processing

Proteins and Their Synthesis

Gene Isolation and Manipulation

Regulation of Gene Expression in Bacteria and Their Viruses

Regulation of Gene Expression in Eukaryotes

The Genetic Control of Development

Genomes and Genomics

Mutation, Repair, and Recombination

Large-Scale Chromosomal Changes

Population Genetics

The Inheritance of Complex Traits

Evolution of Genes and Traits

Filters