Subject: Science and tech Context: Indian Council of Medical Research (ICMR) approved the use of TrueNat machines, manufactured by a Goa-based company, for carrying out confirmatory tests for Covid-19 disease. Concept: The SARS-CoV-2 virus, which causes Covid-19, does not have a DNA, but an RNA molecule. The reverse transcription process (the RT in RT-PCR) converts the RNA […]