Recombinant DNA Technology
Restriction enzymes

cut DNA in a staggered fashion
cut DNAs producing a blunt end
All of these
protect bacteria from viral infection

ANSWER DOWNLOAD EXAMIANS APP

Recombinant DNA Technology
Some genetic diseases cannot be diagnosed by changes in restriction sites. Some of these can be detected by allele-specific oligonucleotide probes. These are

short sequences that will hybridize only to a specific base sequence
copies of the gene with an altered sequence so that a restriction site is inserted
mutagenized copies of a gene
PCR-amplified variable numbers of tandem repeats (VNTRs)

ANSWER DOWNLOAD EXAMIANS APP