A triple heterozygous individual for the mutant genes a b an

A triple heterozygous individual for the mutant genes \'a\', \'b\', and \'c\', was testcrossed. What is the probable gene arrangement given the following data for their progeny? Select one: a. \'a\' and \'b\' linked, \"c\' unlinked \'a\' and \'c\' linked, \'b\' unlinked all three linked \'d\' in the middle all three linked, \'c\' in the middle all genes unlinked

Solution

B. a and c linked but b unlinked.

50% of the gametes produced by a doubly-heterozygous individual are event in the F1 double heterozygote, the following offspring are produced in the testcross crossovers can be very useful if three or more mutations are available on the same.