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NEET BIOLOGYMedium

What is the expected percentage of F2 progeny with yellow and inflated pod in dihybrid cross experiment involving pea plants with green coloured, inflated pod and yellow coloured constricted pod?

A

100%

B

56.25%

C

18.75 %

D

9%

Step-by-Step Solution

According to Mendelian genetics, in pea plants, Green pod colour is dominant over Yellow, and Inflated pod shape is dominant over Constricted . In a standard dihybrid cross between homozygous dominant (Green, Inflated) and homozygous recessive (Yellow, Constricted) parents, the F2 phenotypic ratio is 9:3:3:1 . The progeny with Yellow (recessive) and Inflated (dominant) pods correspond to the proportion 3/16. Converting this to a percentage: (3/16) × 100 = 18.75%.

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