One Consequence of an Individual Who Has Compound Heterozygosity at the CFTR

Multiple Choice

One consequence of an individual who has compound heterozygosity at the CFTR locus is

A) if the individual has children all the children will be affected
B) the parents will most likely have CF as well
C) the condition will be more difficult to diagnose
D) any drug that might effectively treat one allele will probably not affect another