Jaya read in a biotechnology book that alien DNA can be introduced into host cell by micro injection and biolistics. Explain these methods

Can you think and answer how a reporter enzyme can be used to monitor transformation of host cells by foreign DNA in addition being a selectable marker?

How can we make a host cell competent to receive a foreign gene or DNA?

Restriction endonucleases are the enzymes used to cut the DNA molecules. Give any two procedures to introduce the recombinant DNA into the host cell.