Biology, 01.09.2019 08:50 TVASALLO31

What must be true of a person with cystic fibrosis?
a. at least one parent was a carrier for cystic fibrosis.
b. the mother was a carrier for cystic fibrosis.
c. one of the parents had the condition cystic fibrosis.
d. both parents had at least one allele for cystic fibrosis.

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What must be true of a person with cystic fibrosis?
a. at least one parent was a carrier for...