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  • Image of teosinte and maize on a green background.
    Rights: John Doebley, CC BY 4.0 Published 1 February 2010, Updated 26 September 2024 Size: 54 KB Referencing Hub media

    Teosinte is an ancient grain thought to have been selectively bred into maize 6,000 to 10,000 years ago. It has few kernels, and they are enclosed in a hard casing.

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