Question

When a transponson is inserted into a recipient DNA, _______ is produced at the site of insertion. (1) a direct repeat in the recipient DNA (2) a inverted repeat in the transposon (3) a deletion in the recipient DNA (4) a deletion in the transposon (5) a single-strand DNA

Answer 1

When a transponson is inserted into a recipient DNA, a direct repeat in the recipient DNA is produced at the site of insertion. The correct option is 1.

Step-by-step explanation:

When a transposon is inserted into a recipient DNA, a direct repeat in the recipient DNA is produced at the site of insertion.

This occurs because the mechanism of transposition involves transposase, an enzyme that facilitates the insertion of the transposon into the target DNA.

At the site of insertion, staggered cuts are made in the recipient DNA, and after the transposon is ligated into the target site.

The gaps are filled by replication, generating direct repeats of the recipient DNA flanking the transposon insertion site. The correct option is 1.