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Lakhmir Singh Solutions Class 10 Biology Solutions for Exercise in Chapter 4 - Heredity and Evolution

Question 15 Exercise

In the F2 generation of a cross, progeny having different traits are produced in the ratio 3:1. State whether it is a monohybrid cross or a dihybrid cross? Give one example of such a cross.

Answer:

The given condition is a monohybrid cross. In the F1 generation, when a tall pea plant (TT) is crossed with a dwarf pea plant (tt), all tall pea plants (with genotype Tt) are obtained. In the F2 generation, If these tall plants (Tt) are self-crossed, then the tall and dwarf plants will be in the ratio 3:1.

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