- 4 Assume That Investigators Crossed A Strain Of Flics Carrying The Dominant Eye Mutation Lobe On The Second Chromosome 1 (30.72 KiB) Viewed 120 times
4. Assume that investigators crossed a strain of flics carrying the dominant eye mutation Lobe on the second chromosome with a strain homozygous for the second chromosome recessive mutations smooth abdomen and straw body. The Fi Lobe females were then backcrossed with homozygous smooth abdomen, straw-body males, and the following phenotypes were observed: smooth abdomen, straw body 820 Lobe 780 smooth abdomen, Lobe 42 straw body 58 smooth abdomen 148 Lobe, straw body 152 If there were no double crossover phenotypes observed, give the gene order and map units for these three loci.