Some genetic diseases cannot be diagnosed by changes in restriction sites. Some of these can be detected by allele-specific oligonucleotide probes. These are
1.copies of the gene with an altered sequence so that a restriction site is inserted
2.mutagenized copies of a gene
3.short sequences that will hybridize only to a specific base sequence
4.PCR-amplified variable numbers of tandem repeats (VNTRs)
Posted Date:-2021-03-07 10:53:13