determining if the sources are primary or secondary, ascertaining the qualifications and reputation of the author/speaker, and identifying the setting/circumstance of the source. In the quest for ...

Diagram shows movement of DNA from the cyanobacterial progenitor of plastids to the primary host nucleus and, subsequently, to the nucleus of the secondary host. Disclaimer: AAAS and EurekAlert!

determining if the sources are primary or secondary, ascertaining the qualifications and reputation of the author/speaker, and identifying the setting/circumstance of the source. In the quest for ...