Interbreeding, also known as miscegenation (13 letters) and MIXTURE (7 letters), is the process of breeding between two different species or varieties. It is a form of genetic exchange that can lead to the formation of new species or varieties. Interbreeding can occur naturally or be artificially induced by humans. It is an important tool in the development of new varieties of plants and animals, and has been used to create hybrid species with desirable traits.