HW6, transposable element mobilization A schematic for a section of DNA in bacte

Question

HW6, transposable element mobilization

A schematic for a section of DNA in bacteria is shown below. Two insertional sequences are indicated (IS1 and IS2) with their transposase and inverted terminal repeat (ITR) components. There is also a gene that provides resistance to ampicillin and a gene that provides resistance to tetracycline. Segments that have mutations that disrupt function and render components non-functional are indicated with a slashed line.

Part A

Which gene or set of genes can mobilize and insert elsewhere?

Which gene or set of genes can mobilize and insert elsewhere?

E.IS1

Please help me with the answer. I put none of the above and gotten it wrong

E.IS1

Please help me with the answer. I put none of the above and gotten it wrong

Explanation / Answer

Answer: E. IS1

Transposable elements (TEs), also known as "jumping genes," are DNA sequences that move from one location on the genome to another.  

Thus, based on above information it is concluded that only IS1 can mobilize and insert elsewhere. IS1 can not mobilize and insert elsewhere, as mutations in ITRs would abolish the transposable element’s ability to move. However, ampR and tetR are structural genes which cannot mobilize and insert elsewhere.

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