In dogs, T = dominant allele for long tail, t = recessive allele for short tail, B = dominant allele for brown, and b = recessive allele for black.

In dogs, T = dominant allele for long tail, t = recessive allele for short tail,
B = dominant allele for brown, and b = recessive allele for black. When completing the cross TtBb x TtBB, what proportion of the F1 is ttBB?
What is the probability of a blue-eyed (recessive) mom and a brown-eyed (dominant) dad having a brown-eyed child? Consider all possible genotypes of Dad at this gene and give the probabilities associated with each genotype.
If the couple in b, had a blue eyed child, what is the probability of them subsequently having a brown eyed child and a blue eyed child?