What is the proportion of phenotypes in the second generation resulting from the self-fertilization of the 'AaRr' offspring in the following cross: yellow and smooth peas (dominant) x green and wrinkled peas (recessive)?


9 yellow and smooth peas, 3 yellow and wrinkled peas, 3 green and smooth peas, 1 green and wrinkled pea
9 green and wrinkled peas, 3 yellow and wrinkled peas, 3 green and smooth peas, 1 yellow and smooth pea
9 yellow and smooth peas, 3 green and wrinkled peas, 3 yellow and wrinkled peas, 1 green and smooth pea