Transposable Elements
About the Lecture
The lecture Transposable Elements by Georgina Cornwall, PhD is from the course Genomics.
Included Quiz Questions
Which of the following is TRUE of transposable elements? Select all that apply.
- Long interspersed retrotransposable elements (LINEs) can transpose themselves.
- Transposable elements make up 45% of the human genome.
- Transposable elements have little effect on gene expression.
- Short interspersed retrotransposable elements (SINEs) may interrupt gene expression.
- SINEs are usually longer than LINEs.
Which of the following is NOT correct?
- Transposons are highly conserved regions of noncoding DNA that provide structural support to centromeres.
- Retrotransposons move by a “copy and paste” mechanism and depend on reverse transcriptase activity.
- LINEs can transpose themselves and may facilitate the movement of SINEs.
- SINEs are embedded in LINEs and often interrupt other genes.
- LTRs code reverse transcriptase to transcribe themselves.
Which of the following best describes a dead transposon?
- A transposable element that no longer has the machinery to move
- A piece of DNA that is inserted into a gene to render the gene useless
- A piece of DNA between a start and a stop codon
- A piece of DNA that is expressed in the mature mRNA molecule
- A piece of DNA that is removed during RNA splicing
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Author of lecture Transposable Elements
Georgina Cornwall, PhD
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