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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 SINE commonly contains the restriction site for the endonuclease __________
2. Hybrid dysgenesis occurs in which of the following cases?
3. Transposase restriction mechanism of the IS element restricts the transposon and the target DNA in a combination of which of the following?
4. The central block of the composite transposable element consists a gene for __________
5. Which of the following about the P-element is false?
6. Dysgenesis occurs in every cell of the Drosophila.
7. The transposable elements of bacteria are generally retrotransposons.
8. P-strains of the Drosophila have active P-elements.
9. Direct repeats in the IS element are present __________
10. Silencing of transposons cannot be achieved by which of the following mechanisms?
11. Hybrid dysgenesis is caused by which of the following transposable element?
12. The enzyme that catalyzes the transposition of an IS element is called __________
13. Transposable elements are often found once in a gene and have a unique sequence for its own.
14. Retrotransposons transposes through the RNA intermediates.
15. Junk DNA are also a type of transposable element that can jump from one location to another within the genome.
16. LINE and SINE are examples of __________
17. The direct repeat within the IS element has a length of __________
18. The IS elements can be identified by the presence of __________
19. Which of the following functions is not performed by transposase?
20. Transposons are able to move by ___________ mechanism(s).
21. Retrotransposons are of how many types?
22. Pick the odd one out.
23. The type of mutation that is imposed by transposons is ___________
24. Transposons were first discovered in ___________
25. Which of the following about the L1 LINE family is correct?

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