Ann Trommershausen Bowling (June 1, 1943 – December 8, 2000) was an American scientist who was one of the world's leading geneticists in the study of horses, conducting research in the areas of molecular genetics and cytogenetics.

[1][2][3] She was an adjunct professor at the University of California, Davis (UCD), and at the time of her death in 2000 was the executive associate director of the Veterinary Genetics Laboratory (VGL) there.

[20] Her lab pioneered the DNA-based parentage verification of horses and camelids —species for which Bowling herself had conducted research[b]—using microsatellites as biomarkers.

[23] Some of the more unusual work the VGL performed was a 1996 investigation by Scotland Yard, which sought help from the lab to identify the source of a blood sample associated with a murder.

[c] From very early in her career, Bowling wrote about educating horse breeders on genetic diseases in purebred animals and how to deal with these conditions.

In 1985, she created a breeding herd at UCD of horses known to carry CA, and this small group provided preliminary DNA data for researchers.

[25] Bowling's own studies of CA were unpublished at the time of her death, but she is credited with demonstrating that the condition had a recessive mode of genetic inheritance and was likely the result of a single mutated allele.

[31] She was part of a research team that studied lethal white syndrome (LWS), a fatal condition in newborn foals.

[34] In 1983, the team linked LWS to a coat color spotting pattern,[32] later identified as frame overo, which is seen in the American Paint Horse and related breeds.

[36][37] While researching lethal white syndrome, Bowling also studied the phenomenon of cropouts; spotted offspring born from two minimally-marked parents.

[45] Bowling owned Arabian horses, and was a co-founder of the New Albion Stud along with her husband Michael and her parents, Bill and Claire Trommershausen.

They started the farm in September 1980, about the same time that Ann and Michael married, and placed an emphasis on bloodlines descended from the Crabbet Arabian Stud.