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%.