In the context of vaccines manufactured to prevent COVID-19 pandemic, consider the following statements:1. The Serum Institute of India produced COVID-19 vaccine named Covishield using mRNA platform.2. Sputnik V vaccine is manufactured using a vector based platform.3. COVAXIN is an inactivated pathogen based vaccine.Which of the statements given above are correct?
✓ Correct answer: b) 2 and 3 only
ExplanationStatement 1 is incorrect: Covishield does not use an mRNA platform.It is manufactured by the Serum Institute of India (SII) in partnership with AstraZeneca and Oxford University.It is based on a viral vector platform.It uses a chimpanzee adenovirus vector (ChAdOx1) which is modified to carry genetic instructions for the SARS-CoV-2 spike protein.When the vaccine is administered, the adenovirus enters human cells and stimulates the production of the spike protein, triggering an immune response. mRNA vaccines do not use a viral vector 9 Science and Technology Science and Technology 531Statement 2 is correct: DNA Barcoding helps in the identification of species even from minute amounts of tissue which can help tackle problems like the illegal trade of endangered species.It can be a tool to distinguish among species that look alike.Statement 3 is correct: DNA barcoding, widely used in fish species, is a viable method for authenticating processed food.Using DNA barcoding, natural resource managers can monitor the illegal trade of products made of natural resources like hardwood tre
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