Which one of the following is double stranded virus?

Explanation

Option A is correct.Pox viruses are a family of viruses that contain double-stranded DNA. This means that their genetic material is made up of two strands of DNA that are linked together.The parvovirus strand that causes parvoviral disease in dogs is called Canine parvovirus (CPV). It is a single-stranded DNA virus that is very stable and can survive for long periods of time in the environment. CPV is highly contagious and can be spread through contact with infected dogs, their saliva, feces, or vomit.Reoviruses are a family of double-stranded RNA (dsRNA) viruses that infect a wide range of hosts, including humans, animals, and plants. They are named for respiratory enteric orphan viruses, as they were originally discovered in respiratory and enteric (intestinal) secretions of humans and animals. Reoviruses are non-enveloped, meaning that they do not have a lipid membrane surrounding their capsid. The strand of a toga virus is positive-sense, single-stranded RNA. This means that the RNA is complementary to the mRNA that is used to produce proteins. The positive-sense RNA is also infectious, which means that it can be used to infect cells directly. Viruses are classified on different basis such as capsid shape, types of hosts and genome. On basis of genome there are many categories of viruses such as:• Double stranded DNA viruses:Herpesvirus, papillomavirus, poxvirus• Single stranded DNA viruses:Parvovirus, circovirus • Double stranded RNA viruses:Reovirus, rotavirus • Single stranded viruses:Poliovirus, coronavirus,Influenza virus, HIV,