‘Microsatellite DNA’ is used in the case of which one of the following?
[amp_mcq option1=”Studying the evolutionary relationships among various species of fauna” option2=”Stimulating ‘stem cells’ to transform into diverse functional tissues” option3=”Promoting clonal propagation of horticultural plants” option4=”Assessing the efficacy of drugs by conducting series of drug trials in a population” correct=”option1″]
This question was previously asked in
UPSC IAS – 2023
Microsatellite DNA (also known as Short Tandem Repeats or STRs) consists of repeating sequences of a few nucleotides (typically 2-6 bp) found throughout the genome. These regions are highly variable in length among individuals and even among closely related species due to differences in the number of repeat units. This high variability makes microsatellites excellent genetic markers for population genetics studies, genetic diversity analysis, parentage testing, individual identification, and studying evolutionary relationships, particularly among populations within a species or among closely related species where there is sufficient variability.