Cystic fibrosis is an inherited disease that affects the respiratory, digestive, or reproductive systems of the body, with symptoms ranging from mild to severe. Bob and Sally are recently married. Upon deciding to plan a family, both Sally and Bob find out that they are both heterozygous for cystic fibrosis, but neither of them has symptoms of the disorder.
Assignment details: Complete a Punnett Square for cystic fibrosis for this couple using the following alleles: C = normal allele; and c = allele for cystic fibrosis.
Complete the Punnett Square in the graphic organizer.
Also answer the following questions:
Based on the Punnett square, calculate chances (percentages) for the following:
- for having a healthy child (not a carrier)
- a child that is a carrier for the cystic fibrosis trait
- a child with cystic fibrosis