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Molecular Biology Practice Test: Mobile DNA
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Avg score: 63% • Most missed: “SINES are transcribed by __________”
Mobile DNA topics include: mobile DNA elements and multitude of transposable elements. Mobile DNA, also known as transposable DNA elements, are DNA fragments that can be moved or copied to other regions of a genome. They are present in nearly all organisms and make up to two-thirds of the human genome.  The process of movement is often called transposion, and the mobile DNA, transposons. Some mobile DNAs move by different mechanisms to transposons, but have similarities.  Mobile DNA movements are the primary engines of protein evolution, rather than replication errors. Laboratory... Show more
Molecular Biology Practice Test: Mobile DNA
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25 Questions

1. The enzyme that catalyzes the transposition of an IS element is called __________
2. Pick the odd one out.
3. Which of the following about the P-element is false?
4. P-strains of the Drosophila have active P-elements.
5. Which of the following is a non-composite transposon?
6. Pick the odd one out.
7. Direct repeats in the IS element are present __________
8. The direct repeat within the IS element has a length of __________
9. SINES are transcribed by __________
10. LINE and SINE are examples of __________
11. Dysgenesis occurs in every cell of the Drosophila.
12. LTR-retrotransposons are abundantly found in __________
13. Which of the following about the L1 LINE family is correct?
14. Transposable elements are often found once in a gene and have a unique sequence for its own.
15. Transposons are able to move by ___________ mechanism(s).
16. On the mechanism of the movement of transposable elements they are of ___________ types.
17. The consensus sequence of the L1 LINE family has three open reading frames.
18. Retrotransposons transposes through the RNA intermediates.
19. Transposase restriction mechanism of the IS element restricts the transposon and the target DNA in a combination of which of the following?
20. The transposons are more abundant than retrotransposons in higher eukaryotes.
21. The IS elements can be identified by the presence of __________
22. The transposable elements of bacteria are generally retrotransposons.
23. Hybrid dysgenesis is caused by which of the following transposable element?
24. Silencing of transposons cannot be achieved by which of the following mechanisms?
25. Hybrid dysgenesis occurs in which of the following cases?

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