What are the possible genotypes of the parents of a child who is colorblind? Create a Punnett square to find out. Explain what the different possibilities are.

Answer-

Red-green color blindness is a recessive trait and blue-yellow color blindness is a dominant trait.

Depending on which color blindness the genotypes would be,

red-green CB-

cc and cc

Or

Cc and cc

If it's blue-yellow color blindness it would be

CC and CC

Or

CC and Cc