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Q. In a cross between AABB x aabb, the ratio of F, genotypes between AABB. AaBB, Aabb and aabb would be

AIPMTAIPMT 1992Principles of Inheritance and Variation

Solution:

In a cross between AABB x aabb, the ratio of F, genotypes between AABB, AaBB, Aabb and aabb would be 1 : 2 : 2 : 1. Genotype is the genetic make up of an individual. This may refer to just one trait or it may refer to the combination of many or all of the traits of the individuals.