If you liked this, you will be delighted to learn about the “Triangle of U”: the common brassicas are not just tetraploid, they are Frankensteinian mashups of earlier diploid species with different numbers of chromosomes!
That's like hearing some mammal babies don't consume milk!
It's actually at the center of a lot of research attention right now for its potential to act as a booster for vegetables that DON'T make traditional mycorrhizal associations
https://en.wikipedia.org/wiki/Citrus_taxonomy#/media/File:Ci...
Citrons, Pomelos, and True Manderins are the progenitor wild species that were hybridized to give us everything from clementines to grapefruit to key limes and more