WAEC Biology 2016 Objective — Question 44

Question 44 of 50 from the West African Examinations Council (WAEC) Biology 2016 Objective paper, with the correct answer and a full explanation.

44. The illustration below represents a cross between a colour blind male and a normal female. Study it carefully and answer questions 44 and 45. What is the genotypic ratio of carrier female to normal males in the cross? A. 1:1 B. 2:3 C. 3:4 D. 4:1

A. 1:1Correct
B. 2:3
C. 3:4
D. 4:1

Explanation

The two females in the diagram are carriers while the two males are normal. Then, carrier female: normal male = 2:2 = 1:1.

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