Waec Model Questions Vol1 2017 Biology Question 38

Practice objective / multiple choice question 38 from the 2017 Waec Model Questions Vol1 Biology examination.

Waec Model Questions Vol1 2017 Biology Objective / Multiple Choice Medium Difficulty
Question 38 WAEC_MODEL_QUESTIONS_VOL1 • 2017 • BIOLOGY • objective

A man is known to be a carrier (Aa) of an autosomal recessive disorder. His wife has no known family history; the carrier frequency in the population is 1/50. (i) What is the probability that their first child will be affected? (ii) Given that the first child is affected, what is the probability that their second child will be a carrier (heterozygous)?

Answer Options

A. 1/4
Correct Answer B. 1/2
C. 1/8
D. 3/4
Correct Answer
B
Correct Option:
1/2

About This Question

This is Waec Model Questions Vol1 2017 Biology Question 38. It is one of the objective questions from the 2017 Waec Model Questions Vol1 Biology examination.

Difficulty level: Medium .

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