crossed to individuals of genotype a/a,b/b. What are the expected F2 genotype ratios if: A. the two loci are located on separate chromosomes? (A/a;B/b:A/a;b/b:a/a;B/b: a/a;b/b) B. the two loci are located on the same chromosome 20cM apart? ( AB/ab:Ab/ab:aB/ab : ab/ab).