Which will result in a diffrent of squares

Certain factors are dominant, and othwr factors are recessive.
Punnett squares.
Each chromosome contains a single, tightly wound DNA molecule.
The result of mitosis is two identical diploid cells. The result of meiosis is four gebetically different haploid cells.

Ibelieve it's a. 2.2 - x = -10.85 (plz tell me if it's right : ) )