Which of the following series best reflects what we know about how the flu virus moves between species?
A) An avian flu virus undergoes several mutations and rearrangements such that it is able to be transmitted to other birds and then to humans.
B) The flu virus in a pig is mutated and replicated in alternate arrangements so that humans who eat the pig products can be infected.
C) A flu virus from a human epidemic or pandemic infects birds; the birds replicate the virus differently and then pass it back to humans.
D) An influenza virus gains new sequences of DNA from another virus, such as a herpesvirus; this enables it to be transmitted to a human host.
E) An animal such as a pig is infected with more than one virus, genetic recombination occurs, the new virus mutates and is passed to a new species such as a bird, the virus mutates and can be transmitted to humans.
RNA Virus Life Cycle
Eleanor Antin, My Kingdom Is the Right Size, from the series The King of Solana Beach.
A series of two PET scans. A scan was done when the volunteer’s eyes were either open (left) or ...
Viruses, such as the hepatitis B virus shown here, need a host to survive and multiply
Sequence Series Arithmatic Progression Problem
Physics - A Mixture of Series and Parallel Capacitance