Arabidopsis thaliana is a green-leafed plant, but a variegated type has green-and-yellow leaves. to investigate the mechanism of plant variegation, researchers created, in the dna of the variegated arabidopsis, a recessive mutation that suppresses variegation. when the green mutants were crossed with the variegated types, the first-generation plants were all variegated, thus confirming the recessive aspect of the mutation. in the second generation (f2), the researchers obtained 84 green plants and 216 variegated plants. using the four-step process, fill in the blanks.χ2= __answer round your answer to 2 decimal places. df = __answer give your answer as a whole number. p = __answer round your answer to 2 decimal places.