commonchant:

“By altering the structure of the carotenes and carotenoid pigments in the watermelon, the group was able to “reprogram” the watermelon’s genetic code to create a product with flesh in various hues based on a simple input in the first two weeks of the watermelon’s growth cycle. According to researchers, although the watermelon may look vastly different on the inside, the actual taste and nutritional benefits of the fruit remain unchanged.”