During viral assembly, newly synthesized capsid proteins come together to form a full-sized capsid. In the case of head-tail viruses, they first assemble an empty capsid and then stuff the viral genome inside. Other capsid are built around the viral genome.

VIRUSES

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A	True
B	False
C	Either A or B
D	None of the above

Explanation:

Detailed explanation-1: -The next step is assembly, in which the products of the replication step can be post-transcriptionally modified. The viral proteins and viral genome are then packed into new virions which can be released from the host cell. Assembly is also sometimes referred to as maturation.

Detailed explanation-2: -Polyhedral viruses: These are many-sided viruses. Their capsids can have different numbers of sides. Most polyhedral viruses have 20 triangular sides and 12 vertices (corners).

Detailed explanation-3: -The capsid surrounds the virus and is composed of a finite number of protein subunits known as capsomeres, which usually associate with, or are found close to, the virion nucleic acid.

Detailed explanation-4: -Formation of an infectious virion requires assembly of the capsid, envelopment by a membrane (if enveloped), and packaging of the nucleic acid (NA) genome within.

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NEET BIOLOGY

BIOLOGICAL CLASSIFICATION

VIRUSES