She identified a particular chromosome breakage event that always occurred at the same locus on maize chromosome 9, which she named the "Ds" or "dissociation" locus.
她发现了一个特殊的染色体断裂事件，这个事件总是发生在玉米9号染色体上的同一个位点，她命名为“Ds”或“dissociation”基因座。