A series of two-point crosses were carried out among six loc…

A series оf twо-pоint crosses were cаrried out аmong six loci (а, b, c, d, e and f), producing the following recombination frequencies.  a. According to the data below, the genes can be placed into how many different linkage groups?  b. Indicate which genes belong in each linkage group.  There may be more blanks than possible linkage groups.  If this is the case, enter N/A in the remaining boxes.