Waec Model Questions Vol1 2017 Biology Question 40

Practice objective / multiple choice question 40 from the 2017 Waec Model Questions Vol1 Biology examination.

Waec Model Questions Vol1 2017 Biology Objective / Multiple Choice Medium Difficulty
Question 40 WAEC_MODEL_QUESTIONS_VOL1 • 2017 • BIOLOGY • objective

In a population of 5,000 individuals, 225 are observed to be homozygous recessive (aa) for a certain trait. Assuming the population is in Hardy-Weinberg equilibrium, calculate: (i) the frequency (q) of the recessive allele, (ii) the expected number of heterozygotes (Aa), and (iii) the probability that a randomly selected individual is a carrier (heterozygous).

Answer Options

A. q ≈ 0.190; expected heterozygotes ≈ 1,500; carrier probability ≈ 0.300
B. q ≈ 0.250; expected heterozygotes ≈ 2,125; carrier probability ≈ 0.375
C. q ≈ 0.150; expected heterozygotes ≈ 1,275; carrier probability ≈ 0.255
Correct Answer D. q ≈ 0.212; expected heterozygotes ≈ 1,670; carrier probability ≈ 0.334
Correct Answer
D
Correct Option:
q ≈ 0.212; expected heterozygotes ≈ 1,670; carrier probability ≈ 0.334

About This Question

This is Waec Model Questions Vol1 2017 Biology Question 40. It is one of the objective questions from the 2017 Waec Model Questions Vol1 Biology examination.

Difficulty level: Medium .

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