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9.Which enzyme encoded by LTR-retrotransposons is most closely related to transposase of DNA transposons in terms of its function? (hint: the enzyme in question will not have the identical functions of transposase. It will, however, share at least one function associated with transposase.)Student ResponseValueCorrect AnswerScore:1/110.Most LTR-retrotransposons create a 5-bp target site direct repeat upon insertion. Using the diagram below write out the 5-bp target site direct repeat for the inserted LTR-retrotransposon shown. (Note: only the top strand is shown. Write down only the top strand 5' to 3'. Answers should be only 5 nucleotides long)Student ResponseValueCorrect AnswerScore:0/1Quiz 4
1.Hydrophobic residues located at precisely interspaced intervals aligned along an extended α-helical region which are responsible for homo- and heterodimerisation are characteristic of which transcription factor (s)?Score:1/12.Finish the sentence: "Most transcriptional activators bind their DNA target sequences through_______"Score:1/13.A nuclear extract has been separated to purify transcription factors using column chromatography to yield 20 different fractions of 0.5ml each. A small volume of each fraction is combined with a radiolabelled double stranded DNA probe that corresponds to asuspected DNA element required for transcription as detected through linker scanning mutational analysis. When the reaction samples are analyzed on an electrophoresis gel, fractions 6-10 have radioactive bands that are obviously shifted from the free probe. All