JAMB Biology 2012 Objective — Question 41

Question 41 of 50 from the Joint Admissions and Matriculation Board (JAMB) Biology 2012 Objective paper, with the correct answer and a full explanation.

A yellow maize is planted and all the fruits obtained are of yellow seeds. When they are cross-bred, yellow seeds and white seeds are obtained in a ratio 3:1. The yellow seed is said to be a

A. non-heritable trait
B. sex-linked trait
C. recessive trait
D. dominant traitCorrect

Explanation

A 3:1 ratio when crossed indicates that the yellow seed colour is a dominant trait.

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