A human gene placed in fruit flies reveals details about a human developmental disorder
Meier-Gorlin syndrome, or MGS, is a rare genetic developmental disorder that causes dwarfism, small ears, a small brain, missing patella and other skeletal abnormalities. In severe cases, MGS results in miscarriages and stillbirths.
Researchers studied this recessive, autosomal disorder in an unusual way—by placing mutant human genes into fruit flies. Specifically, they look at one of the genes involved in MGS called Orc6.

https://medicalxpress.com/news/2020-12-human-gene-fruit-flies-reveals.html