Identity the genetic disease and show how it was genetically passed on to the baby ? ?

The genetic disease is cystic fibrosis. Cystic fibrosis is an autosomal recessive genetic disorder, meaning that a person must inherit two copies of the defective gene (one from each parent) in order to have the disease.

In this case, both parents are carriers of the cystic fibrosis gene, meaning they each have one copy of the defective gene but do not have the disease themselves. When they have a child, there is a 25% chance that the child will inherit two copies of the defective gene and have cystic fibrosis, a 50% chance that the child will inherit one copy of the defective gene and be a carrier like the parents, and a 25% chance that the child will inherit two normal copies of the gene and not have the disease or be a carrier.

In this scenario, the baby inherited one defective gene from each parent, resulting in the development of cystic fibrosis.