Genetics phenotype

Question

In frogs, the surface of the skin is either slimy or dry, and skin texture is either smooth or warty. To determine the inheritance of these traits, you perform the following cross. You are not sure whether any of the parental frogs are true-breeding or not.

Parental phenotype: Slimy & Warty x Slimy & Warty

Offspring phenotype:  1/12 Dry & Smooth 1/4 Dry & Warty 1/6 Slimy & Smooth 1/2 Slimy & Warty 

  

Based on these results, what proportion of progeny do you expect for each phenotype in the crosses below?

Question: A cross between two F1 frogs that are both Slimy & Smooth. (I got partial credit for putting 1/4 Dry & Smooth, 0 Dry & Warty, 3/4 Slimy & Smooth, 0 Slimy & Warty. Not sure what is right and wrong)

Answer 1

1/4 Dry & Smooth (ss ww)

- 3/4 Slimy & Smooth (S_ ww)

- 0 Dry & Warty (ss W_)

- 0 Slimy & Warty (S_ W_)