Genetic analysis suggests all Arabica coffee plants are descended from a single common ancestor, and this lack of genetic diversity makes them vulnerable to extinction
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https://www.newscientist.com/article/2237296-every-arabica-coffee-plant-may-come-from-a-single-common-ancestor/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home
