> Of course evolving the pupa seems like it would be a lot more difficult Once you have evolved one intermediate form others can follow more easily. It’s alway

> Of course evolving the pupa seems like it would be a lot more difficult Once you have evolved one intermediate form others can follow more easily. It’s always important to remember that genes define recipes that create biological structures, not blueprints of what they look like. It’s a different mechanism but genetic networks are good at repeating things like body segments, fingers, etc. Biology invented the REPEAT UNTIL loop a long time before we did.