Which virus may produce incomplete progeny ?: (A) Influenza, (B) Measles, (C) Mumps, (D) Polio
Answer is A. Ans. is 'a' i.e., Influenza When cells are infected with high dose of influenza virus, there is defective asembly during replication and the progeny virons are imcomplete and non-infective.This is called as Man - magnus phenomenon