Problem
Determine the phenotype of a certain generation using trihybrid cross from their first generation to third generation. parents genotype are rrBbdd and RRBBdd. Randomly select one of those offspring from the first generation and create a punnet square using the genotypes of these "children" to produce "grandchildren"- the second generation if they met a parent with genotype RrBbdd to produce "great grandchildren". Determine the possible genotype of the third generation.