Insertion Sequences Are

question 21

Multiple Choice

Insertion sequences are

• A) circular structures present in bacteria that contain genes encoding proteins and RNA, and the capacity to self-replicate and portion into daughter cells during cellular division.
• B) DNA elements that encode transposition and excision function, and can transpose from one place on the chromosome to another.
• C) genetic elements capable of integrating resistance genes (cassettes) by an integron-encoded, site-specific recombinase.
• D) DNA elements found in bacteria that carry genes only for the enzymes needed to promote their own transposition.

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