To this end, Morgan pairs the white-eyed animal with a partner with red eyes ... which previously only a few specialists had worked with: the fruit, vinegar or wine fly with the scientific name, ...

Fruit flies normally have brilliant, red-colored eyes, although occasionally, male flies with white eyes would appear in Morgan's laboratory (Figure 5). Intrigued by these white-eyed males ...

At the beginning of the twentieth century, Thomas Hunt Morgan's famous "fly room" at Columbia University ... Thus, the results of this cross did produce white-eyed females, and the groups had ...