Based on this information, what is Kitkat's phenotype for the ear type trait?

 - straight ears
 - curled ears
Kitkat's genotype for the ear type gene is ee. Kitkat's genotype of ee has only e alleles. The e allele is for straight ears. So, Kitkat's phenotype for the ear type trait must be straight ears.
To check this answer, consider whether Kitkat's alleles are dominant or recessive. The allele for curled ears (E) is dominant over the allele for straight ears (e). This means E is a dominant allele, and e is a recessive allele.
Kitkat'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, Kitkat's phenotype for the ear type trait must be straight ears.