Answer:
Pp and pp
the genotypic ratio is 2Pp: 2 pp
Explanation:
When doing the cross you can consider the possibility of the outcome through a punnet square or probability.
A punnet square is the best option to do so, however.
Make a grade with four boxes and place one allele of one genotype over each box like this
P p
|||||||||||||||||||
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|||||||||||||||||||
Add the letters of the other genotype next to the boxes.
P p
p |||||||||||||||||||
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p |||||||||||||||||||
Now put one allele in the box, like you are multiplying the letters
P p
p Pp ||||||||||||||||||| pp
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p Pp ||||||||||||||||||| pp
Now you have done a punnet square