Use the Figure and the Following Description to Answer the Question. in

Question 14
Multiple Choice

Use the figure and the following description to answer the question. In a particular plant, leaf colour is controlled by gene locus D. Plants with at least one allele D have dark green leaves, and plants with the homozygous recessive dd genotype have light green leaves. A true-breeding, dark-leafed plant is crossed with a light-leafed one, and the F1 offspring is allowed to self-pollinate. The predicted outcome of the F2 is diagrammed in the Punnett square shown in the figure, where 1, 2, 3 and 4 represent the genotypes corresponding to each box within the square. img Which of the boxes marked 1-4 correspond to plants that will be true-breeding? A) 1 and 4 only B) 2 and 3 only C) 1, 2, 3 and 4 D) 1 only