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In Antirrhinum (Snapdragon), a red flower was crossed with a white flower and in F1 generation, pink flowers were obtained. When pink flowers were selfed, the F2 generation showed white, red and pink flowers. Choose the incorrect statement from the following:

1. This experiment does not follow the principle of dominance.
2. Pink colour in F1 is due to incomplete dominance.
3. Ratio of F2 is 1/4 (White) : 1/4 (Red) : 1/2 (Pink).
4. Law of Segregation does not apply in this experiment.

Correct answer: Law of Segregation does not apply in this experiment.

Solution

In Antirrhinum, red × white gives pink F1 because neither allele fully masks the other, so this is incomplete dominance. However, the alleles still segregate normally in meiosis, producing the 1:2:1 F2 pattern; therefore saying the Law of Segregation does not apply is incorrect.

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