Question

A researcher inserted DNA fragments from an organism into plasmids and introduced the modified plasmids into bacterial cells. Which of the following methods would be the most efficient means of identifying which clones contain a specific gene of interest?

A) Assay for activity of the gene product.
B) Sequence the DNA of the plasmids from each isolate.
C) Use a northern blot to detect the mRNA of the gene.
D) Use a microarray to detect a transcript of the gene.
E) Isolate clones that still have the vector's genetic marker

Answer 1

the answer would br E because i acutally don know