Long-terminal repeats are unique to which group of transposons?
A) Composite transposon
B) Non-viral retro element
C) Viral-like retro element
D) Replicative transposon
E) Insertion sequence

Question

Quizplus · Accepted Answer

Long-terminal repeats (LTRs) are characteristic of retrotransposons and retroviruses, which are considered a type of viral-like retro element. A retrotransposon is a transposable element that moves in the genome via an RNA intermediate and uses reverse transcriptase to make a DNA copy of its RNA. Retroviruses work in the same way, except that their RNA gets packaged into virion particles and released from the cell to infect other cells. Both retrotransposons and retroviruses share structural features, such as LTRs, which are short DNA sequences that flank the ends of their integrase-containing open reading frames. LTRs are important for regulating the expression and integration of retrotransposons/retroviruses into the host genome.

Long-Terminal Repeats Are Unique to Which Group of Transposons