Chapter 6, Problem 11EQ

In the tomato, three genes are linked on the same chromosome. Tall is dominant to dwarf, skin that is smooth is dominant to skin that is peachy, and fruit with a normal rounded tomato shape is dominant to oblate (flattened) shape. A plant that is true-breeding for the dominant traits was crossed to a dwarf plant with peachy skin and oblate fruit. The ${\text{F}}_{\text{1}}$ plants were then testcrossed to dwarf plants with peachy skin and oblate fruit. The following results were obtained:  

151 tall, smooth, normal   

33 tall, smooth, oblate   

11 tall, peach, oblate   

2 tall, peach, normal  

155 dwarf, peach, oblate   

29 dwarf, peach, normal   

12 dwarf, smooth, normal   

0 dwarf, smooth, oblate

Construct a genetic map that shows the order of these three genes and the distances between them.