(Originais Teachy 2025) - Question Hard of Biology

In one family, it was noted that a rare genetic condition, which impacts the body's ability to process a specific amino acid, has been passed down through three generations. A family tree was created to examine how this condition is inherited, revealing that it affects both males and females equally, without skipping any generations. Given this inheritance pattern and understanding that the condition arises from a recessive allele, what is the likelihood of a heterozygous couple having a child with the condition if both parents are in good health? Assume there are no new mutations taking place.