An organism of the genotype AaBbCc was testcrossed to a triply recessive organism (aabbcc). The genotypes of the progeny are presented in the following table.20 AaBbCc 20 AaBbcc20 aabbCc 20 aabbcc5 AabbCc 5 Aabbcc5 aaBbCc 5 aaBbccAnswer part (a) again, assuming the three genes are so tightly linked on a single chromosome that no crossover gametes were recovered in the sample of offspring.

A wild-type trihybrid soybean plant is crossed to a pure-breeding soybean plant with the recessive phenotypes pale leaf (l), oval seed (r), and short height (t). The results of the three-point test cross are shown below. Traits not listed are wild type.

Phenotype                  Number
Pale                               648
Pale, oval                        64
Pale, short                      10
Pale, oval, short            102
Oval                                  6
Oval, short                    618
Short                               84
Wild type                         98
                                    1630

Calculate the recombination frequencies between the adjacent genes.

A wild-type trihybrid soybean plant is crossed to a pure-breeding soybean plant with the recessive phenotypes pale leaf (l), oval seed (r), and short height (t). The results of the three-point test cross are shown below. Traits not listed are wild type.

Phenotype                  Number
Pale                               648
Pale, oval                        64
Pale, short                      10
Pale, oval, short            102
Oval                                  6
Oval, short                    618
Short                               84
Wild type                         98
                                    1630

What are the alleles on each homologous chromosome of the parental wild-type trihybrid soybean plant? Place the alleles in their correct gene order. Use L, R, and T to represent dominant alleles and l, r, and t for recessive alleles.