63955JORAIN 63955JORAIN Science Answered 21. If R represents a dominant gene for round and r represents a recessive gene for wrinkled, which will be the genotypic ratio of the offspring? A. 25RR:25 Rr:50rr B. 25RR:50Rr:25rr C. SORR:25Rr:25rr D. 75RR:25 Rr:Orr