Question

Viral mutations and variants are often categorized by changes in ________.

A) host range
B) viral size
C) capsid shape
D) host range and/or plaque morphology
E) plaque morphology

Answer 1

Viral mutations and variants are often categorized by changes in plaque morphology, which refers to the appearance and characteristics of the plaques that viruses create on a lawn of host cells.

Step-by-step explanation:

Viral mutations and variants are often categorized by changes in plaque morphology. This refers to the appearance and characteristics of the plaques, or clear zones of cell death, that viruses create on a lawn of host cells in a laboratory setting. By observing and comparing the differences in plaque morphology, scientists can identify and classify different viral mutations and variants.