Recombinant DNA
Charged molecules are separated based on varying rates of migration through a solid matrix when subjected to an electric field. This technique is known as

gel electrophoresis
autoradiography
photoreactivation
blotting

ANSWER DOWNLOAD EXAMIANS APP

Recombinant DNA
Bacterial cells protect their own DNA from degradation by restriction endonucleases by

not producing any restriction endonucleases
having anti restriction endonucleases
methylating the DNA at the sites that the enzyme recognizes
deleting all recognition sites from the genome

ANSWER DOWNLOAD EXAMIANS APP