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Don't dismiss it completely; Gregor Mendel's work was cited only three times, criticized, and ignored for 35 years before his discoveries in genetics were recognized in the field of science. Requirements for third-party use of tutorial modules. For example, People for the Ethical Treatment of Animals will provide only that information which supports their cause, whereas the U.S. In this case, 84% of readers who voted found the article helpful, earning it our reader-approved status.