Melanocytes are skin cells which produce pigment. When melanocytes over produce melanin granules, freckles can appear. Leslie, who does not have freckles, and Erin, who has freckles, are parents to 3 kids, who all have freckles.

Freckles are the phenotype of the MCR1 gene, a single gene with two alleles. Answer the following question:

1. Denote the dominant allele as f and the recessive allele as f. What are the genotypes of Leslie, Erin, and their children?

Leslie:

Erin:

Children:

2. Are freckles dominant or recessive? Briefly explain how you now (3 sentence limit).