Showing posts with label dicotyledon. Show all posts
Showing posts with label dicotyledon. Show all posts
Walnuts - Juglans regia - are dicotyledons. They have two seed-leaves, and the nut reflects this in its shape, being bilaterally symmetrical. So I was surprised when eating my way through a bag of walnuts to find one that was trilaterally symmetrical.

Does this mean that this mutation would be a tricotyledon? It wasn't just shell features: the interior nutmeat followed the three-lobed plan.
So how common is this mutation?