A Piece of DNA That Is 3 Kb in Length

question 76

Multiple Choice

A piece of DNA that is 3 kb in length is found in many locations throughout the genome. How would you decide whether this was a LINE or a DNA transposon?

• A) Count the number of copies in the genome. If it has more than 10,000 copies, it is a LINE; if not, it is a DNA transposon.
• B) Count the number of copies in the genome. If it has more than 10,000 copies, it is a DNA transposon; if not, it is a LINE.
• C) If it contains the sequence GCTCGATC it is a LINE; if not, it is a DNA transposon.
• D) If it uses an RNA intermediate, it is a LINE; if not, it is a DNA transposon.
• E) If it uses a copy and paste mechanism of copying, it is a DNA transposon; if not, it is a LINE.

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