Number of dsRNA segments in reovirus genome:
Reoviruses are double-stranded RNA (dsRNA) viruses that contain segmented genomes. The reovirus genome consists of 10 segments of dsRNA. Each segment encodes for different proteins that are essential for the virus's replication and survival within the host cell.

Importance of segmented genome:
Having a segmented genome provides reoviruses with several advantages. Firstly, it allows for genetic reassortment to occur when two different strains of reovirus infect the same host cell. This reassortment can lead to the generation of novel virus strains with potentially altered pathogenicity or host range.

Genetic diversity and evolution:
The presence of multiple segments also contributes to the genetic diversity of reoviruses. This genetic diversity plays a crucial role in the virus's ability to adapt to changing environmental conditions and host immune responses. It also drives the evolution of reoviruses over time.

Segment-specific functions:
Each dsRNA segment in the reovirus genome encodes for specific viral proteins that are involved in different stages of the viral life cycle, such as attachment, entry, replication, and assembly. The coordinated expression of these proteins is essential for the successful replication and spread of the virus within the host.
In conclusion, the reovirus genome consists of 10 segments of dsRNA, each encoding for different viral proteins. This segmented genome structure provides reoviruses with genetic flexibility, diversity, and the ability to evolve in response to changing environmental pressures.