And your contention is nonsense. The crossbreeding that takes place in nature, and the crossbreeding man can accomplish by basic breeding or fertilization methods, and gene combinations that can only be achieved in a lab, and could never happen in nature, are entirely different things.
Just why do you think we have the new terms of genetic engineering and genetic modification, if it's all the same?
Be it natural, or human induced - crossbreeding is genetic modification.