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College of Arts and Sciences genomics and bioinformatics

Cacao analysis dates domesticated trees back 3,600 years

Theobroma cacao tree fruitsResearchers analyzing the genomes of cultivated cacao trees have traced their origin to a “single domestication event” some 3,600 years ago. The discovery opens a new front in a long-running argument regarding when and where humans started growing the source of chocolate.

“This evidence increases our understanding of how humans moved and established in America,” said Omar Cornejo, a Washington State University population geneticist and lead author of an article on the study in » More …