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What generation of Mendelian cross has a phenotypic ratio of 3:1?(a) F0(b) F1(c) F2(d) F3This question was posed to me during an internship interview.This question is from Inheritance Principles topic in chapter Principles of Inheritance and Variation of Biology – Class 12

Answer»

Correct choice is (c) F2

The explanation: The phenotypic ratio is the ratio of different PHENOTYPES observed in the progeny. In the F2 generation of a MENDELIAN cross, there are 75% plants with dominant PHENOTYPE and 25% plants with a RECESSIVE phenotype. This gives a phenotypic ratio of 3:1.



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