Dihybrid squares

In order to find the phenotypes of two traits at the same time, you must use

DIHYBRID Punnet squares. 

You first star with two traits, say eye color and hair color:

Hh and Ee

And then you put the two traits together: 

HhEe

From this, you can distribute all the possibilities of traits: 

And create a 16-box Punnet square, distributing the trait pairs like you would in a regular punnet square:

This shows all the possible trait combinations for two heterozygous parents. 

In a rush to type this before my mother finds out,

Dr. Freddie Stein