You observe that an interesting mutant phenotype has arisen in your cell culture. A clonal kidney cell line derived from female individual has what appears to be a patch of muscle cells growinig in it. You wish to test the hypothesis that muscle cell is arisen from a SINGLE cell with a mutation. How would you test your hypothesis?
Inversions are known to affect crossing-over. The following homologs have the indicated gene order (the filled and open cirlces are homologous centromere). Diagram the results of a single crossover between the homologous gene B and C in the inversion.