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In Antirrhinum (dog flower), the phenotypic ratio in F2generation for the inheritance of flower colour would be a. 3 : 1 b. 1 : 2 : 1 c. 1 : 1 d. 2: 1

Question

In Antirrhinum (dog flower), the phenotypic ratio in F2generation for the inheritance of flower colour would be a. 3 : 1 b. 1 : 2 : 1 c. 1 : 1 d. 2: 1

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Solution

The phenotypic ratio in the F2 generation for the inheritance of flower color in Antirrhinum (snapdragon) would be 1:2:1. This is because Antirrhinum follows incomplete dominance for the inheritance of flower color. In incomplete dominance, the heterozygous genotype results in an intermediate phenotype, leading to a 1:2:1 phenotypic ratio in the F2 generation. So, the correct answer is b. 1:2:1.

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