Based on this information, what is Flounder's phenotype for the eye color trait?

 - red eyes
 - black eyes
Flounder's genotype for the eye color gene is ee. Flounder's genotype of ee has only e alleles. The e allele is for black eyes. So, Flounder's phenotype for the eye color trait must be black eyes.
To check this answer, consider whether Flounder's alleles are dominant or recessive. The allele for red eyes (E) is dominant over the allele for black eyes (e). This means E is a dominant allele, and e is a recessive allele.
Flounder's genotype of ee has only recessive alleles. An organism with only recessive alleles for a gene will have the recessive allele's version of the trait. So, Flounder's phenotype for the eye color trait must be black eyes.