Tomatoes (IMAGE)

Weizmann Institute of Science

Tomatoes

Caption

Unripe (top) and ripe (bottom) tomatoes. Regular tomatoes (far left) start out green and turn red when ripe. In contrast, genetically engineered tomatoes assume different shades of red-violet, depending on whether they produce betalains (second from left), pigments called anthocyanins (second from right) or betalains together with anthocyanins (far right).

Credit

Weizmann Institute of Science

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