Usage History of 'testcross'

The following chart shows how frequently 'testcross' appeared in printed materials over time. For example, the word 'testcross' occurred 2 times in books in 1908 and 1,705 times in 2008. From 1908 to 2008, the word 'testcross' was used a total of 29,725 times in books scanned by Google. See Reference: Google Ngram project.

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