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six spots is dominant five spots is wild type a and c b and c 5. Epidermolysis b

ID: 195603 • Letter: S

Question

six spots is dominant five spots is wild type a and c b and c 5. Epidermolysis bullosa (EB) is inherited as an autosomal recessive trait and causes painful blistering of the skin. Two people who are both carriers of EB want to know the chance that their first child will have EB. What is the probabililty? 1/16 1/8 1/4 1/2 3/4 6. Oguchi disease is a form of night blindness inherited as an autosomal recessive. A woman who is a carrier of EB (see above) and Oguchi disease marries a man who has Oguchi disease and is a carrier of EB. They plan to have 5 children. What is the chance one will have EB only, one will have Oguchi disease only and the rest will have neither condition? 0.05 0.12 0.21 0.53 0.78 b. d.

Explanation / Answer

4) the correct option is option (e) both B and C

5) the correct option is option (d) 1/2

6) the correct option is option (b)