In sweet peas, genes C and P are necessary for colored flowers. In the absence of either (__ pp or ...

In sweet peas, genes C and P are necessary for colored flowers. In the absence of either (__ pp or cc
  __), or both (cc pp), the flowers are white. What will be the color of the offspring of the crosses in
  what proportions for the following?
  (a) Cc Pp  cc pp
  (b) Cc Pp  Cc Pp
  (c) Cc PP  Cc pp
  (d) Cc pp  cc Pp What will be an ideal response?
 
 

Question 2

In summer squash, spherical-shaped fruit has been shown to be dominant to elongated fruit. On one
  occasion, two different spherical varieties were crossed and produced all disk-shaped fruits. When
  these hybrid disk-shaped fruits were crossed, they produced 75 disk-shaped fruits, 48 spherical fruits,
  and 9 elongated fruits. Explain. What will be an ideal response?