An apple is a popular fruit that comes from the tree Malus domestica, which belongs to the Rosaceae family. Apples are known for their sweet to tart flavor, crisp texture, and wide range of varieties, which vary in color from red, green, yellow, to combinations of these hues. Common varieties include Red Delicious, Granny Smith, Fuji, Gala, and Golden Delicious, each with its own unique taste and texture.