Which of the following is true about the genetic disease cystic fibrosis (CF)?
A) CF demonstrates autosomal recessive inheritance. B) CF increases the risk of skin cancer. C) CF patients produce abnormal blood cells. D) CF causes excessive accumulation of phenylalanine in the blood. E) CF causes improper metabolism in nerve cells.
What is the distinctive pattern of inheritance found for X-linked recessive traits?
A) Only males are affected. B) Affected males have an affected father. C) Hemizygous males and homozygous females are affected. D) Only females are affected. E) Affected individuals will always have an affected parent and an unaffected parent.