choice. This image is a derivative work of the following images: Influenza geneticshift.jpg licensed with Cc-by-sa-3.0-migrated, GFDL, GFDL-user-en-no-disclaimers...
DescriptionInfluenza geneticshift-gl.svg English: This is an inaccurate reproduction of the source . The two "parents" are correctly labeled, but in the...
