A pair of mice are bred several times generating the following data table. What are the most likely genotypes of the parents?

One parent is hybrid, one is recessive

Explanation:

If you do the punnet square, you will notice that there are two outcomes, and that they have a similar proportion, this is only possible if you math a recessive mouse (lets say the recessive allele is white), and a hybrid, that will show the dominant trait (lets say that black is dominant).

So: P=black and p=white

Pp x pp=

2/4 Pp(looks black) and 2/4 pp (looks white)