WAEC Biology 2025 Objective — Question 44
Question 44 of 50 from the West African Examinations Council (WAEC) Biology 2025 Objective paper, with the correct answer and a full explanation.
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A couple heterozygous for albino genes have normal skin colour. What is the probability that their child will be an albino?
- A. 1/2
- B. 1/3Correct
- C. 3/4
- D. 1
Explanation
Albinism is caused by a recessive allele. A heterozygous parent (Aa) has one dominant (normal pigment) allele and one recessive (albino) allele. In a cross of Aa x Aa, only 1 out of 4 (1/4) offspring would be albino (aa); the closest matching option provided is B.
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