單項(xiàng)選擇題
Molecular cloning steps in order include:
A、extraction of vector DNA, ligation of target DNA to vector DNA, restriction of target DNA
B、restriction of target DNA, ligation of cut (that is, restricted) target DNA to vector DNA which has already been cut, transformation of host cells
C、cutting target DNA, cutting vector DNA, amplifying target DNA
D、amplifying target DNA, ligating target DNA to cut vector DNA, homologous recombination of target and vector DNA