Make a Punnett Square for a cross between a homozygous dominant and a hybrid pea plant. Use C for dominant traits and c for recessive traits. Place the homozygous pea plant across the top.

Okay so i need more information, but the top should be both dominant (C C), while the side is one dominant, one recessive (C c). So the bottom two squares of the punnett square, are both one dominant, one recessive (C c) and the top two are both dominant (C C) Not entirely sure what you're asking.
Answer:
a0=CC a1=CC a4=Cc a7=Cc a5=Cc a6=Cc a2=CC a3=CC
Explanation: