Usage History of 'epistases'

The following chart shows how frequently 'epistases' appeared in printed materials over time. For example, the word 'epistases' occurred 2 times in books in 1964 and 20 times in 2008. From 1964 to 2008, the word 'epistases' was used a total of 167 times in books scanned by Google. See Reference: Google Ngram project.

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