Viro 3/E1

Polyploidy is seen in which viruses?

Paramyxoviruses
Heteroployploidy is seen in which viruses?
- Paramyxoviruses
- Enveloped RNA Viruses
Phenotypic Mixing is seen in which viruses?

Enveloped viruses
What type of mutation yields extreme genetic masking?

Transcapsidation
Viral Replication occurs where?
- RNA: Cytoplasm
- DNA: Nucleus
What enzyme is responsible for NA replication/mRNA synthesis?

_NA-Dependent _NA Polymerase
Steps in viral replication
- Attachment
- Penetration
- Uncoating
- Synthesis of Viral Compnents
- Assembly
- Release
Types of Penetration:
- Translocation
- Endocytosis
- Fusion
- Injection
Early:

Period before the start of viral nucleic acid replication.
Late:
- Period after the start of viral nucleic acid replication.
- Early gene:
- Viral genes that express before nucleic acid replication
Early Genes encode for….

… enzymes or factors that help in virus replication.
Late gene:

Viral genes that express after nucleic acid replication
Late Genes encode for…

…viral structural proteins and factors for virus assembly.
Eclipse phase:

Attachment, penetration and uncoating have taken place. Synthesis of viral components may have started, but viral assembly has not yet started.
Maturation phase:

Virus assembled.
Released:

Get out of the cell
Inactivation:

Loss of virus infectivity.

Author

HLW

98599

Card Set

Viro 3/E1

Description

Viro 3/E1

Updated

2011-08-27T19:17:29Z