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Q. 95.0( 3 Votes )

Study the following cross and showing self pollination in F1, fill in the blank and Solution the question that follows

Class 10th NCERT - Science Exemplar 9. Heredity and Evolution

Answer :

A dihybrid cross shows inheritance of two different traits simultaneously. In the given question, when pure breeding dominant parent plant (RRYY) crossed with pure breeding recessive parent plant (rryy), it give heterozygous dominant progeny in F1 generation. All progeny in this cross will have genotype RrYy and exhibit round yellow. Self-cross of F1 progeny will give F2 generation.

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PREVIOUSIn the following crosses write the characteristics of the progenya). RRYY x RRYY (round yellow x round yellow)b). RrYy x RrYy (round yellow x round yellow)c). rryy x rryy (wrinkled green x wrinkled green)d). RRYY x rryy (round yellow x wrinkled green)NEXTIn the previous question, what are the combinations of character in the F2 progeny? What are their ratios?

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