Cystic fibrosis is an inherited disease in which the production of a thick, sticky mucus clogs the lungs and scars the pancreas, A newly married couple undergoes genetic screening and discovers that they each carry a recessive allele for cystic fibrosis. Wh
is the best way for this couple to determine the probability that one of their children will have cystic fibrosis?
A. They can classify their genes.
B. They can use astrology,
C. They can use a Punnett square.
D. They can test for other diseases.