Neco 2019 Biology Question 49

Practice objective / multiple choice question 49 from the 2019 Neco Biology examination.

Neco 2019 Biology Objective / Multiple Choice Medium Difficulty
Question 49 NECO • 2019 • BIOLOGY • objective

In a population of beetles, two colour morphs exist: morph A and morph B. In a forest environment, predation causes a mortality rate of 30 % for morph A and 10 % for morph B each generation. If the initial frequencies are 0.60 for morph A and 0.40 for morph B, calculate the frequencies of each morph after one generation of selection. Which morph is favoured by natural selection and why?

Answer Options

A. After one generation, morph A frequency ≈ 0.48 and morph B frequency ≈ 0.52; morph B is favoured because it suffers lower predation mortality.
B. After one generation, morph A frequency ≈ 0.54 and morph B frequency ≈ 0.46; morph A is favoured because it suffers lower predation mortality.
C. After one generation, morph A frequency ≈ 0.57 and morph B frequency ≈ 0.43; morph A is favoured because it has higher initial frequency.
Correct Answer D. After one generation, morph A frequency ≈ 0.54 and morph B frequency ≈ 0.46; morph B is favoured because it suffers lower predation mortality.
Correct Answer
D
Correct Option:
After one generation, morph A frequency ≈ 0.54 and morph B frequency ≈ 0.46; morph B is favoured because it suffers lower predation mortality.

About This Question

This is Neco 2019 Biology Question 49. It is one of the objective questions from the 2019 Neco Biology examination.

Difficulty level: Medium .

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