Cross-breeding is a way of applying the principles of heredity in agriculture to develop superior varieties of plants and animals. It involves the deliberate breeding of two different varieties or breeds of the same species in order to obtain offspring with desirable traits from both parents. The process of cross-breeding can result in offspring that are stronger, more disease-resistant, or have other desirable traits, depending on the specific goals of the breeding program. Cross-breeding is a common practice in modern agriculture and has been used to produce a wide variety of crops and livestock with improved traits.