Which of the following can be diagnosed by amniocentesis?
Options
A. Down's syndrome
B. Cystic Fibrosis
C. Sickle cell anemia
D. All of these
Correct Answer
All of these
Recombinant DNA Technology problems
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1. Some genetic diseases cannot be diagnosed by changes in restriction sites. Some of these can be detected by allele-specific oligonucleotide probes. These are
Options
A. copies of the gene with an altered sequence so that a restriction site is inserted
B. mutagenized copies of a gene
C. short sequences that will hybridize only to a specific base sequence
D. PCR-amplified variable numbers of tandem repeats (VNTRs)