When F 1 Individuals are crossed with one of the two parents from which they were derived, then such a cross is called a back cross. It is a crossing of a hybrid with one of its parents or an individual genetically similar to its parent. It is done to achieve the offspring with a genetic identity which is closely related to that of their parent.

Biology Botany Standard 12>Chapter 2 - Classical Genetics>Evaluation>Q 18

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Gene which suppresses other genes activity but does not lie on the same locus is called as

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Important Questions on Classical Genetics

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12th Tamil Nadu Board

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Biology Botany Standard 12>Chapter 2 - Classical Genetics>Evaluation>Q 19

Pure tall plants are crossed with pure dwarf plants. In the F₁ generation, all plants were tall. These tall plants of F₁ generation were selfed and the ratio of tall to dwarf plants obtained was 3:1. This is called.