A breed is a specific group of domesticated animals or plants that share distinct characteristics, such as appearance, behavior, or genetic traits. Breeds are often developed through selective breeding, where individuals with desirable traits are chosen to reproduce. This process can lead to variations within a species, such as different types of dogs or cats. In agriculture, breeds are important for livestock and crops, as they can influence productivity and adaptability. For example, different chicken breeds may be raised for meat or egg production, while various corn breeds can be cultivated for specific climates or uses. Understanding breeds helps farmers and pet owners make informed choices.