Definition of "tetraploidy" []

• The condition where cells have four of each chromosome. (noun)

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• "Evidence for degenerate tetraploidy in bdelloid rotifers."
• "The chromosome number of 2n = 52 suggests tetraploidy."
• "Improvement of Plantago ovate Forsk. through tetraploidy and mutation breeding Indian Journal of Agricultural Science, 45, 426 - 429."