Gce Model Questions Vol1 2021 Biology Question 25

Practice objective / multiple choice question 25 from the 2021 Gce Model Questions Vol1 Biology examination.

Gce Model Questions Vol1 2021 Biology Objective / Multiple Choice Medium Difficulty
Question 25 GCE_MODEL_QUESTIONS_VOL1 • 2021 • BIOLOGY • objective

In a family, an autosomal recessive disorder is present. Both parents are phenotypically normal but each has an affected sibling. Assuming Hardy-Weinberg equilibrium and that the disorder is rare, what is the probability that their first child will be affected? Express your answer as a common fraction.

Answer Options

A. 1/3
B. 1/6
Correct Answer C. 1/9
D. 2/9
Correct Answer
C
Correct Option:
1/9

About This Question

This is Gce Model Questions Vol1 2021 Biology Question 25. It is one of the objective questions from the 2021 Gce Model Questions Vol1 Biology examination.

Difficulty level: Medium .

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