Schools annually assess the vision and hearing of its students in addition to assessing the physical growth of children by measuring the height and weight. Should schools also be calculating body mass index (BMI) and sending notices home if the child's BMI is high?

Which of the following processes within viral replication is the greatest source of genetic variation in rna virus populations? a) high mutation rate due to lack of proofreading of rna genome replication errors. b) transcription from the host cell rna polymerase introduces numerous mutations. c) capsid proteins from the host cell can replace the viral capsid. d) viral rna is translated by host cell ribosomes.