Practice question
Question
COVID-19 caused by:
Explanation
SARS-CoV-2 causing COVID-19 is an enveloped betacoronavirus containing positive-sense single-stranded RNA genome of about 30 kb. Its genomic RNA directly serves as mRNA for translation of replicase polyproteins, enabling rapid cytoplasmic replication via RNA-dependent RNA polymerase without DNA intermediate.
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