What is Incomplete Dominance?

Incomplete dominance is when the dominant alleles are, well incomplete. In other words the dominant alleles mix. For example, say you have a red flower and you breed it with a white flower. Both flower colors are dominant traits. Let's say that when you breed them together your offspring is pink flower. Basically, what happened was that your two colors fused together to create one color.

What is Co-Dominance?

Co-dominance is when there are equally dominant alleles. Say you have a white flower and a purple flower. If it were incomplete these two flowers would create a light purple offspring but since the dominant alleles do not mix in this case the flower offspring would be BOTH white and purple.

What is a way to experiment this?

If you want to experiment this you could create 3 traits (best if color) and make 2 dominant colors and one recessive. Then create a punnett square and match the traits. You will get one or more with two dominant traits. I can not finish this because i am not sure how tell if an allele is incomplete or co. HELP?!?!?!

This video on youtube teaches you so much more on this topic: http://www.youtube.com/watch?v=skGl7h6W7-k