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Parent pea plants were crossed for contrasting traits, i.e. round and wrinkled seeds. The progeny obtained in F 1 -generation is Rr, RR, Rr and rr. Which of these are dominant and recessive traits?

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Tall plan (RR): dominant trait 

Wrinkled seed (rr): recessive trait 

From the above given progeny obtained in the F1 generation: 

1 RR: dominant 

2 Rr: dominant 

1 rr: recessive T

he ratio would be - 1:2:1

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