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%

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%

Hope this helps

tttccgugdfhhsvhsfghc

explanation:

yooptfrhtr

unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.