Question

The “trombone model”________

Group of answer choices

Explains how the Okazaki fragments can be replicated on the lagging strands.

Is very similar to the “trumpet model” but can explain much better the simultaneous replication of the two DNA strands by the replisome.

All of the answers correct (besides the one that states none of the answers is correct).

None of the answers correct.

Explains how the lagging DNA strand folds on itself and allows the two/three DNA polymerases synthesize DNA while associated in the replisome.

Answer 1

Explains how the lagging DNA strand folds on itself and allows the two/three DNA polymerases synthesize DNA while associated in the replisome.

Explanation:

A) It does not explain how the Okazaki fragments are repicated. They can be primed, filled and ligated without a "Trombone" structure.

B) There is no such thins as a "Trumpet model". Bit of Joker, your teacher.

C) It does explain how it is possible for the replisome to be ensembled in a single functional macromolecular unit in relicpation process. If it were not, the lagging strand Polymerase would need to be detached from the replisome and act by itself or be attached to another replisome or replisome-like structure in the lagging strand. It would still work, but the Trombone model explains how it would all fit in a single replisome.