Question

a. Name the group of viruses responsible for causing AIDS in humans. Why are these viruses so named? 

b. List any two ways of transmission of HIV infection in humans, other than sexual contact.

Answer 1

a. Retrovirus. These are named so because they have RNA genome and reverse transcriptase enzyme which carries on the processes RNA → DNA → RNA. 

b. Infected blood transfusion/sharing syringes/needles children born to HIV mothers.