Where is the difference found when comparing cultivated fruit varieties of apples, pears, grapes, currants with wild varieties?

Various varieties of fruits have been bred by humans from wild crops through artificial selection. Man selected only those plants whose fruits were more suitable for food, and multiplied and crossed them, seeking to enhance the trait.

Almost all wild fruits (apples, pears, grapes, currants, etc.) have low palatability: as a rule, they are sour or bitter, rather small and not very tasty, are often tough and practically inedible. The cultivated varieties of the same fruits are usually large, fleshy and juicy, sweet, with good taste.