Science and Technology
2023
Biotechnology Basics
Genetic Engineering
‘Microsatellite DNA’ is used in the case of which one of the following?
B.Stimulating ‘stem cells’ to transform into diverse functional tissues
C.Promoting clonal propagation of horticultural plants
A.Studying the evolutionary relationships among various species of fauna
D.Assessing the efficacy of drugs by conducting series of drug trials in a population
Correct Answer: Option A
Microsatellites, also known as Short Tandem Repeats (STRs), are short, repeating sequences of DNA (typically 1-6 base pairs long) found at specific locations in the genome.
These sequences are usually non-coding, and the number of repeats often varies between individuals. This variability makes them useful as polymorphic markers.
Microsatellites are valuable tools for:
- Studying inheritance patterns within families.
- Creating DNA fingerprints (useful in forensic science).
- Analyzing population genetics due to their neutral evolutionary history.
- Studying the evolutionary relationships among various species of fauna.
Therefore, option (a) is the correct answer.
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