Question

Which of the following occurs between particular short sequences present on otherwise dissimilar parental molecules?

(a) Homologous genetic recombination

(b) Site specific recombination

(c) Non-homologous recombination

(d) Replicative recombination

I had been asked this question in an internship interview.

I would like to ask this question from DNA Recombination topic in portion DNA, RNA and Protein Metabolism of Biochemistry

Answer 1

Correct choice is (b) Site specific recombination

The explanation: Homologous genetic recombination occurs between DNA molecules of very similar sequences.

Non-homologous recombination occurs in regions where no large –scale sequence similarity is apparent.

Replicative recombination generates a new copy of the transposable element at a new location of DNA.