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WAEC Biology 2022 Question 48

Question 48

Mendelian Inheritance

When two carriers of sickle cell anaemia produce an offspring, the probability of the offspring being a Sickler is

  1. A.¾
  2. B.¼
  3. C.½
  4. D.⅔
Show the answer and explanation

Answer: B (¼)

Explanation

AS × AS gives AA, AS, AS and SS; one in four (¼) is SS, a sickler.