What Is The Probability Of Two Parents That Are BB And BB To Have An Offspring With A Recessive Trait?

What Is The Probability Of Two Parents That Are BB And BB To Have An Offspring With A Recessive Trait? If a mother and father are both brown eyed with heterozygous genotype Bb, then they each have probability of 50% of passing on the dominant allele B and a probability of 50% of passing on