A bacterial sample was contaminated with an unknown preparation of vector DNA.In order to identify the vector,the bacteria was streaked on a plate and incubated overnight.Examination of the plate revealed at least 120 clear plaques.Which of the following is a plausible conclusion?

Question

Quizplus · Accepted Answer

The presence of clear plaques indicates that the vector is a phage. Plasmids and cosmid do not form plaques, while Ti vectors are specific to plant cells and are unlikely to be present in bacterial samples. pUC18 is a plasmid vector and would not form plaques like a phage vector.

A Bacterial Sample Was Contaminated with an Unknown Preparation of Vector