Examlex
Einkorn (Triticum boeoticum) is an ancient grain with a diploid number of 14 (2n = 14). Durum (Triticum turgidum) appeared later. Durum grains are larger and the plant is hardier. It has twice the genetic material of Einkorn (2n = 28) but contains basically the same chromosomes. Can you propose a hypothesis on how durum evolved?
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