[2] Following high school, Justice enrolled a Fort Hays State University and began working as a medical technologist at St. Francis Hospital.
[1][4] Upon completing her PhD, Justice began a postdoctoral fellowship in the Mammalian Genetics Laboratory at the National Cancer Institute.
[5] Upon completing her fellowship, Justice was recruited by Allan Bradley to join the faculty at Baylor College of Medicine (BCM) to continue her research in developing high-throughput methods for assigning functions to mammalian genes.
[1] As a professor of molecular and human genetics at BCM, she became a co-principal investigator on a project to develop mouse models which would enable scientists to identify the function of protein-coding genes in the mammalian genome.
[6] Through a grant, Justice co-identified a mutation in a gene involved in the synthesis of cholesterol which led to the development of new treatments for Rett syndrome.