Drosophila female flies that are heterozygous for recessive alleles at three loci on chromosome 3 ("p" for pink eyes, "cp" for clipped wing margins, and "nb" for no bristles) are crossed to true-breeding pink-eyed, clipped-wing, no-bristle males. The distribution of phenotypes in the progeny was:

p + +                      422

p + n b                   51

+ + n b                   26

p cp nb                 1

p cp +                    23

+ + +                      1

+ cp +                    47

+ cp nb                  429

Calculate the genetic distance between the loci and draw the linkage map of the three genes.

What was the mother's genotype?