In corn, the genes for the following three traits are linked on the same chromosome: plant color, yellow (y) is recessive to green (Y); endosperm shape, shrunken (sh) is recessive to non-shrunken (Sh); and seed color, colorless (c) is recessive to colored (C). A plant heterozygous for these three genes was testcrossed and the resultant progeny and the number of each are listed below (the alleles designate the phenotype):
Phenotype Number of progeny

y sh c 95

Y Sh C 100
y Sh C 3
Y sh c 2
y sh C 20
Y Sh c 25
y Sh c 375
Y sh C 380

-Determine the order of the genes on the chromosome.
-Calculate the map distance between the genes.
-Determine the coefficient of coincidence and interference.
-Draw the alleles found on the chromosomes of the homozygous parents and the heterozygous plant used in the testcross.