When genetically engineering an organism, a plasmid

Question

a. is the main chromosome of the bacteria that is cloned.

b. is cut with a restriction enzyme to accept the gene of interest.

c. helps screen for cells that did not take up the gene of interest.

d. combines with the gene of interest to make a replicating chromosome.

B or D?

Answer 1

According to
http://library.thinkquest.org/C004367/be9.shtml
it sounds like B.

Answer 2

Thank you!