AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

VIRUSES AND PRIONS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Groups of UNRELATED viruses are often grouped by
A
evolutionary history
B
routes of infection
C
intermediate host
D
nucleic acid
Explanation: 

Detailed explanation-1: -Morphology: Viruses are grouped on the basis of size and shape, chemical composition and structure of the genome, and mode of replication. Helical morphology is seen in nucleocapsids of many filamentous and pleomorphic viruses.

Detailed explanation-2: -Viruses can be classified on the basis of capsid shape, presence or absence of an envelope, and type of nucleic acid.

Detailed explanation-3: -The mode of transmission can include direct contact, droplets, a vector such as a mosquito, a vehicle such as food, or the airborne route. The susceptible host has multiple portals of entry such as the mouth or a syringe.

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