Which of these transposable elements do not carry genes for functions other than those needed for transposition?

Question

Quizplus · Accepted Answer

Insertion sequences (IS) are the simplest type of transposable elements and they only carry genes necessary for transposition, such as the gene for transposase. They do not carry any additional genes for functions other than transposition. Composite transposons, retrotransposons, and conjugal transposons, on the other hand, can carry additional genes such as antibiotic resistance genes, virulence factors, and metabolic genes.

Which of These Transposable Elements Do Not Carry Genes for Functions