Question

When two hybrids ttrr and rrtt are crossed the phenotypic ratio of offspring shall be?

Answer 1

1.Gametes formed by Ttrr are of two types Tr and tr 2 Gametes formed by ttRr are tR and tr

3.The resultant offsprings will be ::-

1.TtRr Tall stem and round seed

2.Ttrr Tall stem and wrinkled seed

3.ttRr Dwarf stem and round seed

4.ttrr Dwarf stem and wrinkled seed..

So there will be all 4 types with Phenotypic ratio of 1:1:1:1 Hope it's clear and will help...

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Answer 2

phenotypic ratio of offspring shall be: 1. 3:1.