What function does a competent cell have that makes it useful in cloning experiments?
A) Competent cells resist transfection by a viral vector.
B) Competent cells repair DNA strands without the aid of DNA ligase.
C) Competent cells utilize transposons as a vector.
D) Competent cells take up DNA from the external environment.

Question

Quizplus · Accepted Answer

Competent cells have the ability to take up DNA from their external environment, which is essential in cloning experiments where DNA is introduced into the cells for replication and analysis. Competent cells can be treated with calcium chloride or other methods to make them more permeable to DNA molecules, allowing for successful transformation.

What Function Does a Competent Cell Have That Makes It