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Insect genetics. Sequencing 40 silkworm genomes unravels history of cultivation.

Archeological evidence points to China domesticating silkworms more than 5000 years ago. But the details are elusive and still debated. Was silkworm domestication a long, slow process that gradually emerged throughout the country and its variety of ecological backgrounds? Or was it a one-time event that took place quickly and in a limited geographic area?