Gce Model Questions Vol1 2019 Biology Question 24

Practice objective / multiple choice question 24 from the 2019 Gce Model Questions Vol1 Biology examination.

Gce Model Questions Vol1 2019 Biology Objective / Multiple Choice Medium Difficulty
Question 24 GCE_MODEL_QUESTIONS_VOL1 • 2019 • BIOLOGY • objective

In a human population the allele frequency of a recessive X‑linked disorder is q = 0.02. Assuming Hardy-Weinberg equilibrium and an equal sex ratio, calculate:\n(i) the proportion of affected males,\n(ii) the proportion of carrier females,\n(iii) the expected number of affected newborns in a sample of 10 000 births (rounded to the nearest whole number).

Answer Options

A. Affected males: 1 % (50); carrier females: 4.00 % (≈200); total affected newborns: 52
Correct Answer B. Affected males: 2 % (100); carrier females: 3.92 % (≈196); total affected newborns: 102
C. Affected males: 2 % (100); carrier females: 3.92 % (≈196); total affected newborns: 150
D. Affected males: 2 % (100); carrier females: 4.00 % (≈200); total affected newborns: 120
Correct Answer
B
Correct Option:
Affected males: 2 % (100); carrier females: 3.92 % (≈196); total affected newborns: 102

About This Question

This is Gce Model Questions Vol1 2019 Biology Question 24. It is one of the objective questions from the 2019 Gce Model Questions Vol1 Biology examination.

Difficulty level: Medium .

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