Morgan observed a higher number of recombinant offspring involving eye color and wing length ( 401 + 318 ) than those involvin color and eye color ( 17 + 12 ) . How can these results be explained?
a. The gene affecting body color is not on the x chromosome.
b. The gene affecting wing length is not on the x chromosome.
c. The genes affecting eye color and wing length are closer together on the x chromosome than are the genes affecting body color and eye color
d. The genes affecting eye color and wing length are farther apart on the x chromosome than are the genes affecting body color and eye color.
e. The gene affecting eye color is on the chromosome.