Recombinant DNA
For gene probes to be useful they must

None of these
both (a) and (b)
be labeled in some manner to allow detection
be large enough to contain gene-specific sequences

ANSWER DOWNLOAD EXAMIANS APP

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

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

ANSWER DOWNLOAD EXAMIANS APP