The 1973 Annual Symposium Chromosome Structure & Function provided an appropriate backdrop for the dedication ceremony and renaming of Animal House to McClintock Laboratory. Some alterations had been done to the building, which included adding Neurobiology teaching laboratories on the second floor. By that time, all animal quarters had been removed. There was no question that the McClintock name was the most suitable since many of Barbara McClintock’s most important cytological experiments had been conducted there in the 1940s, including her famous discovery of "jumping genes," for which she later received a Nobel Prize. Note in the picture above that the building's brick trim had been painted white, a sign of 1970s modernization.