In Drosophila, Dichaete (D) is a mutation on chromosome III with a dominant effect on wing shape. It is lethal when homozygous. The genes ebony body (e) and pink eye (p) are recessive mutations on chromosome III. Flies from a Dichaete stock were crossed to homozygous ebony, pink flies, and the F₁ progeny, with a Dichaete phenotype, were backcrossed to the ebony, pink homozygotes. Using the results of this backcross shown in the table,Phenotype NumberDichaete 401ebony, pink 389Dichaete, ebony 84pink 96Dichaete, pink 2ebony 3Dichaete, ebony, pink 12wild type 13Diagram this cross, showing the genotypes of the parents and offspring of both crosses.

Researchers cross a corn plant that is pure-breeding for the dominant traits colored aleurone (C1), full kernel (Sh), and waxy endosperm (Wx) to a pure-breeding plant with the recessive traits colorless aleurone (c1), shrunken kernel (sh), and starchy (wx). The resulting F₁ plants were crossed to pure-breeding colorless, shrunken, starchy plants. Counting the kernels from about 30 ears of corn yields the following data.

Kernel Phenotype                           Number
Colored, shrunken, starchy               116
Colored, full, waxy                             601
Colored, full, starchy                        2538
Colored, shrunken, waxy                       4
Colorless, shrunken, starchy            2708
Colorless, full, starchy                            2
Colorless, full, waxy                            113
Colorless, shrunken, waxy                  626
                                                          6708

Calculate the recombination frequencies between the gene pairs.