The mode of evolution responsible for the production of recombinant influenza viruses composed of a genome derived from two different influenza variants is called _____.

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The mode of evolution responsible for the production of recombinant influenza viruses composed of a genome derived from two different influenza variants is called antigenic shift. Antigenic shift typically occurs when an individual is infected with two different strains of influenza at the same time, allowing genetic material to mix and create a new virus with a different antigenic profile. This can lead to the emergence of pandemic strains of influenza, as seen in the H1N1 pandemic of 2009.

The Mode of Evolution Responsible for the Production of Recombinant