How are plasmids used in genetic engineering?

Plasmids are used in genetic engineering to transfer foreign genetic material into different types of cells. The foreign DNA fragment is inserted into the plasmid and the recombinant DNA molecule is transformed into the recipient cell. The transformed cells are selected by the antibiotic resistance of the used plasmid.

ans.

dna fingerprinting is defined as a process that determines the dna characteristics of an individual. these dna characteristics are unique among individuals as their fingerprints, so it is known as dna fingerprinting.

steps of dna fingerprinting includes extraction of dna from sample, amplification of dna, restriction digestion of amplified dna, and then analysis of dna by gel electrophoresis, respectively.

thus, the next step performed by the scientist is 'to cut the amplified dna (obtained by polymerase chain reaction) by restriction enzymes that cleave the dna into fragments and their analysis.'