Mitosis is a type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the present nucleus. Mitosis is the equational division. In anaphase of mitosis, splitting of chromosomes into two daughter chromatids takes place. So, both the daughter cell has the same type of genotype as of the mother cell.
So the correct answer is option 1. Only one type of genotype will be formed.