1.
In an experiment, recombinant DNA bearing ampicillin-resistance gene is transferred into E.coli cells. The host cells are then cultured on a medium containing ampicillin. The result will be
2.
'Restriction' in Restriction enzyme refers to
3.
The role of DNA ligase in the construction of a recombinant DNA molecule is
4.
Plasmids in bacterial cells are
5.
The DNA polymerase enzyme used in PCR is obtained from