All insertion sequences (IS elements)contain two structural elements that are essential for their movement.What are these two elements?

Question

Quizplus · Accepted Answer

All insertion sequences (IS elements) contain two structural elements that are essential for their movement. These two elements are transposase (the enzyme that mediates the transposition of the IS element) and inverted terminal repeats (the sequences that mark the ends of the IS element and that are recognized by the transposase). Therefore, choice A - transposase and inverted terminal repeats - is the correct answer. Choice B is incorrect because integrase is a term that refers to enzymes that catalyze site-specific recombination reactions, not transposition reactions; and pseudogenes are non-functional copies of genes. Choices C, D, and E are all incorrect because they refer to genes that have no direct connection with IS elements or transposition.

All Insertion Sequences (IS Elements)contain Two Structural Elements That Are