Access the following link to read James Gleick’s essay, “What Defines a Meme?”
Also read this comment on “What’s in a Meme” by Mark A. Jordan which is from from The Richard Dawkins Foundation website and available (for print users) at: https://www.richarddawkins.net/2014/02/whats-in-a-meme/
Dawkins is the biologist most closely connected with the coining of this term meme.
Know Your Meme, used from Wikimedia Commons