Which statement describes how basic DNA technology is used to construct recombinant DNA molecules? (10 points) A. Scientists use a gel-filled electrical chamber during gel electrophoresis to isolate DNA fragments.

B. Scientists use restriction enzymes to cut DNA molecules and ligation to paste DNA fragments together.

C. Scientists use heat and bacterial
transformation to add novel DNA into bacterial cells.

D. Scientists use high temperatures to separate strands of DNA molecules during polymerase chain reaction.