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प्रश्न
What is the phenotypic ratio in the F₂ generation when crossing AaBbCc × AaBbCc in wheat kernel colour?
पर्याय
15 Red : 1 White
63 Red (various shades) : 1 White
27 Dark : 9 Medium : 3 Light : 1 White
9 Red : 3 White : 4 Intermediate
MCQ
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उत्तर
In the classic Nilsson-Ehle wheat kernel colour experiment with three gene pairs, the F₂ ratio is 63 Red (in various shades) : 1 White. This occurs because only the triple recessive genotype (aabbcc) produces white kernels, while all other combinations produce shades of red, demonstrating the continuous variation characteristic of polygenic inheritance.
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