Grapes are a type of fruit that grow in clusters of 15 to 300, and can be crimson, black, dark blue, yellow, green, orange, and pink. "White" grapes are actually green in color, and are evolutionarily derived from the purple grape. Mutations in two regulatory genes of white grapes turn off production of anthocyanins, which are responsible for the color of purple grapes.Anthocyanins and other pigment chemicals of the larger family of polyphenols in purple grapes are responsible for the varying shades of purple in red wines.Grapes are typically an ellipsoid shape resembling a prolate spheroid.

Raw grapes are 81% water, 18% carbohydrates, 1% protein, and have negligible fat. A 100-gram reference amount of raw grapes supplies 288 kilojoules (69 kilocalories) of food energy and a moderate amount of vitamin K of 14% of the Daily Value , with no other micronutrients in significant content.

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