Pink hair is dominant over blue hair in smurfs. Cross a homozygous dominant hair smurf with a homozygous recessive hair smurf. Include your genotype and phenotype ratios below.

Genotype = Pp and Phenotype = Pink.

Explanation:

As, the pink hair is dominant over blue hair.

Let, the allele for the pink hair is denoted by P.

Then, the allele for the blue hair will be denoted by p.

The genotype of homozygous dominant = PP

And the genotype of homozygous recessive = pp

Upon the cross, the genotype of offspring formed = Pp

As the offspring formed have both alleles, one dominant and one recessive. The phenotype will be pink because P is dominant over p.