THE MOLECULAR BASIS OF INHERITANCE
TRANSPOSONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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RNA polymerase
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DNA polymerase
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RNA ligase
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DNA ligase
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Detailed explanation-1: -DNA transposons can move in the DNA of an organism via a single-or double-stranded DNA intermediate. DNA transposons have been found in both prokaryotic and eukaryotic organisms.
Detailed explanation-2: -DNA transposition is the movement of a defined DNA segment (a transposon) from one genomic site to another; the ends of a transposon are specific, but the integration sites generally are relatively random. Movement is catalyzed by a transposon-encoded transposase.
Detailed explanation-3: -Mechanism of transposition: Two transposases recognize and bind to TIR sequences, join and promote DNA double-strand cleavage. The DNA-transposase complex then inserts its DNA cargo at specific DNA motifs elsewhere in the genome, creating short TSDs upon integration.