ewest - all of the differences between plant and animal genetics that you mention are correct, but not relavant to my example. An example in livestock would be crossbreed cattle. My crop example involves crosses between different lines of diploid plants. Maternal inheritance via chloroplasts or mitochondria, sports, self-fertilization, cross-species crosses, polyploidy, and many other genetic phenomina occur, but are not really relavent to my example.
