16. If a recombinant DNA bearing gene for ampicillin resistance is transferred into E. Coli cells and the host cells are spread on agar plates containing amplicillin,then a)   Both transformed and untransformed recipient cells will die b)   Both transformed and untransformed recipient cells will grow c)   transformed recipient cells will grow and untransformed recipient cells will die d)   transformed recipient cells will die and untransformed recipient cells will grow 17. The figure below shows three steps (A,B,C) of polymerase chain reaction (PCR). Select the option giving correct identification together with what it represent?         a)   B- denaturation at a temperature of about 98   separating the two DNA strands. b)   A- denaturation at a temperature of about 50 c)   C- extension in the presence of heat stable DNA polymerase. d)   A- annealing with two sets of Primers 18. Identify the DNA segm