Recombinant DNA Technology
Why is golden rice pale yellow in color?

It is rich in chlorophyll a.
It is rich in chlorophyll b.
It is rich in phycobilins.
It is rich in beta-carotene.

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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
mutagenized copies of a gene
PCR-amplified variable numbers of tandem repeats (VNTRs)
copies of the gene with an altered sequence so that a restriction site is inserted

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Recombinant DNA Technology
Isoschizomers recognize

different recognition site and different recognition sequence
same recognition site and different recognition sequence
same recognition sequence but different recognition site
same recognition site and recognition sequence

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