It's all DNA based, all from the same tree of life, true. But is there any evidence of gene sharing between biological kingdoms in nature? Why can't an animal

It's all DNA based, all from the same tree of life, true. But is there any evidence of gene sharing between biological kingdoms in nature? Why can't an animal and a plant create an offspring that shares both of their genetic information? There's clearly lack of a mechanism for fish-tomato sex but evolution is known to create very elegant mechanisms for things that are beneficial. Intra-species gene sharing has been selected for as being beneficial, inter-species gene sharing hasn't. EDIT: I'm not allowed to comment on the response below? So, here it is... > Given that it is observed in nature, what is your basis for that conclusion? Clearly I was unaware this happens at all in nature which is why I asked if it happens. Horizontal Gene Transfer is fascinating. However, it's been around since the beginning but sexual reproduction supplanted it as the preferred method of gene sharing as the complexity of organisms increased.