Question

Cystic fibrosis is a recessive gene disorder. The pedigree chart for a family known to have cystic fibrosis is shown below.

What percentage of the offspring either are carriers or have observable disease?

25%
50%
75%
100%

Answer 1

Cystic fibrosis is a recessive gene disorders the pedigree chart for a family known to have cystic fibrosis is shown below think 100 %

Answer 2

When half of the shape is black it means the person is a carrier. When the whole shape is black this means the person has the disorder.

d.100%