Waec Model Questions Vol1 2025 Biology Question 19

Practice objective / multiple choice question 19 from the 2025 Waec Model Questions Vol1 Biology examination.

Waec Model Questions Vol1 2025 Biology Objective / Multiple Choice Medium Difficulty
Question 19 WAEC_MODEL_QUESTIONS_VOL1 • 2025 • BIOLOGY • objective

In a test cross involving two genes A and B, a total of 200 offspring were recorded with the following phenotypes: 80 showing the parental type AB, 70 showing the parental type ab, 30 showing recombinant type Ab, and 20 showing recombinant type aB. Calculate the recombination frequency between the two genes and express the map distance in map units (centiMorgans). Based on the map distance, state whether the genes are linked.

Answer Options

A. 25 map units; the genes are not linked
Correct Answer B. 25 map units; the genes are linked
C. 30 map units; the genes are linked
D. 20 map units; the genes are linked
Correct Answer
B
Correct Option:
25 map units; the genes are linked

About This Question

This is Waec Model Questions Vol1 2025 Biology Question 19. It is one of the objective questions from the 2025 Waec Model Questions Vol1 Biology examination.

Difficulty level: Medium .

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