Question

A cross between a 3-eyed alien and a 1-eyed alien produces offspring that have two eyes. If two two-eyed aliens cross, what is the percent chance of having a two eyed offspring? (use E and e)

Answer 1

If you cross 2 two-eyed aliens using Ee for each you will get this in the Punnett Square:
There will be a 50% of a two eyed alien when two heterozygous aliens cross :)