A yellow round seeded Pea plant is crossed with green wrinkled seeded Pea plant. Four phenotypes appeared in the progeny in the ratio of 1 : 1 : 1 : 1. The genotype of the two are

YyRr and yyrr

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YYRR and yyrr

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YYRr and yyrr

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YyRR and yyrr

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Solution

The correct option is A YyRr and yyrr

A cross is made between F₁ individual and homozygous recessive individual is called Test cross.

A yellow round seeded plant (YyRr) is corssed with greed wrinkled seeded plant(yyrr). In the next generation, progeny with four types of phenotypes and genotypes are formed in 1:1:1:1 ratio. It is called Test cross.
So, the correct option is ‘YyRr and yyrr’.

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