In human genetics, cystic fibrosis is typically inherited as an autosomal recessive trait. A person who is heterozygous for the cystic fibrosis allele is best described as which of the following?

• A. An affected individual with genotype $CC$ because the cystic fibrosis allele is dominant
• B. An affected individual with genotype $cc$
• C. An unaffected carrier with genotype $Cc$
• D. An unaffected non-carrier with genotype $CC$

Answer: (C)