When we first learned about pollination back in Primary School, I asked the teacher why that didn't lead to stuff like flowers that were half dandelion and half violet. She answered that on each trip from the hive, a bee would visit only one species of flower, so a bee who'd collected nectar and pollen on violets would bring it home to the hive before visiting any other kind of flower.
I believed that for years, and am still disgruntled when I think about a techer telling us silly stories.
A childhood belief about creepy crawlies

others believed things like this
- When I was little I thought that a "wallflower" was a kind of flower that grew on walls.— A. Nonny-Muss
- I used to believe that your belly button was what held your top half to your bottom half...— Debelouwho
- I used to think watering dead flowers would bring them back to life.— Natasha
- I used to think that you could bring dead flowers back to life if you watered them.Anon
- i used to believe that a perrenial was a particular flower's name— Ducki
- when I was 6 years old i use to believe a catfish was half cat one fish.Anon