In Humans, Aniridia, a Type of Blindness, Is Due to a Dominant

question 12

Multiple Choice

In humans, aniridia, a type of blindness, is due to a dominant allele A. Migraine headaches are due to another dominant allele M. If a man who suffers from both conditions (AaMm) marries a woman who suffers from both (AaMm) , what are the chances of an offspring expressing both traits?

• A) 9/16
• B) 3/16
• C) 1/2
• D) 1/16
• E) 4/16