And that means their genotype must be uppercase B. Uppercase B, on the other hand, this female is fully colored, and that means they must be homozygous recessive. So lowercase b lower case B. Now, what happens when we make these two individuals? So we have an individual that is given by uppercase uppercase B. And so the gametes produced by this individual, the sperm cells produced are uppercase B and uppercase B. Likewise, the Xcels produced by this individual a, lowercase B, lowercase upper B.