In molecular biology labs researchers often use E.coli strains that are RecA minus (recA⁻) when transforming a cloned gene into a plasmid which explains why
(I) a Rec A-strain would have fewer replication errors.
(II) a Rec A-strain would have less opportunity forming DNA mutations.
(III) a Rec A-strain would increase error repair.

Question

Quizplus · Accepted Answer

RecA is involved in homologous recombination and DNA repair. A RecA-minus strain would have less opportunity for forming DNA mutations because it lacks the recombination activity that can lead to rearrangements or mutations.

In Molecular Biology Labs Researchers Often Use E