Data is always good.

The results are in from "breeding" my pennies 100 times. Or flipping them 100 times...

Homozygous dominant (HH)- 27 offspring

Heterozygous (Hh)- 47 offspring

Homozygous recessive- 26 offspring

If we compare these results to the results of the Punnett square: 

The results are practically identical! I never should have doubted the Great Mendel's theories. 

However.

What if the parents are homozygous? 

Lucky you, I already have that data, if one of the parents was homozygous dominant for the brown fur color. 

    F     F

F FF   FF

f  Ff    Ff 

Almost identical again. And YOU were beginning to question the Great Mendel's theories!

These results prove how the way traits are distributed are very similar to their probabilites of actually appearing in the phenotype and genotype. Probability of obtaining a ceratin trait is pretty much accurate using just a Punett square!

Making plans,

Dr. Freddie Stein