'Microsatellite DNA' is used in the case of which one of the following?
Show answer
Answer: A. Microsatellites are short, repeated DNA sequences that vary a lot between individuals and populations. They are used as genetic markers to study relationships, population genetics and evolution among species.
Watch for: 'Satellite' sounds like technology; here it is just a name for repeated DNA.
Why the other options are wrong
- B. Wrong because microsatellites are markers, not tools to change stem cells.
- C. Wrong because clonal propagation is done by tissue culture, not microsatellites.
- D. Wrong because drug trials do not use microsatellites for assessing efficacy.
Source to check: NCERT Class 12 Biology, Ch 6 Molecular Basis of Inheritance (DNA fingerprinting and repetitive DNA)
Answer from the official UPSC key. Written and fact-checked by AI against the official key. Spotted a mistake? Report it.