VMC-0069
QUESTION
Complex symmetry occurs in?
OPTIONS
(A) Bacteriophage
(B) TMV
(C) Influenza virus
(D) Pox virus
ANSWER
(D) Pox virus
EXPLANATION
Complex symmetry is characteristic of poxviruses, whose virions have a complex architecture that is neither purely helical nor purely icosahedral. Therefore option D is correct; bacteriophages may have complex combinations of structural symmetries, but the classical animal-virus example of complex symmetry is Poxviridae, while TMV and influenza are predominantly helical in structural organization.
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