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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. Which of the following about the P-element is false?
2. SINES are transcribed by __________
3. LINE and SINE are examples of __________
4. Transposable elements are often found once in a gene and have a unique sequence for its own.
5. Retrotransposons are of how many types?
6. Junk DNA are also a type of transposable element that can jump from one location to another within the genome.
7. Silencing of transposons cannot be achieved by which of the following mechanisms?
8. Pick the odd one out.
9. The IS elements can be identified by the presence of __________
10. Dysgenesis occurs in every cell of the Drosophila.
11. Transposase restriction mechanism of the IS element restricts the transposon and the target DNA in a combination of which of the following?
12. On the mechanism of the movement of transposable elements they are of ___________ types.
13. The SINE commonly contains the restriction site for the endonuclease __________
14. The direct repeat within the IS element has a length of __________
15. The transposable elements of bacteria are generally retrotransposons.
16. Which of the following is a non-composite transposon?
17. The central block of the composite transposable element consists a gene for __________
18. Hybrid dysgenesis occurs in which of the following cases?
19. Which of the following functions is not performed by transposase?
20. Transposons were first discovered in ___________
21. The transposons are more abundant than retrotransposons in higher eukaryotes.
22. Pick the odd one out.
23. Hybrid dysgenesis is caused by which of the following transposable element?
24. LTR-retrotransposons are abundantly found in __________
25. Retrotransposons transposes through the RNA intermediates.

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