I'm just surprised that all those citrus fruit could be interbred. I knew about brassica, but afaik that was the reverse process -- selecting for features in a

I'm just surprised that all those citrus fruit could be interbred. I knew about brassica, but afaik that was the reverse process -- selecting for features in a common ancestor, like how all the myriad breeds of dogs come from far-less-diverse wolves. In this case, we're mashing up a bunch of different plants with their own lineages.