Ingrid Bauer/Jean-Claude Catry wrote:


> Do you know any wild plants who started to split their chromosoms .?


Grasses apparently do this pretty often. That is one reason
wheat is so convenient for plant breeders. They just have to
choose the one they want that occurred naturally. Plants
genetic material is more plastic than animals.

Tetraploid animals usually die, or are infertile. Tetraploid
plants are often fertile.