Homozygous dominant for BRCA1-what is the genotype? (using the letter b)

To determine the genotype of an individual who is homozygous dominant for BRCA1, we can use the letter "b" to represent the gene.

Homozygous dominant means that both alleles of the gene are the dominant form, so both copies of the gene are represented by the same letter. In this case, since we are using "b" to represent the BRCA1 gene, we can denote the homozygous dominant genotype as "BB."