Two decades later, Barbara McClintock and Harriet Creighton demonstrated that chromosomal crossover occurs during meiosis, the process of cell division by which sperm and egg cells are made.
Dúas décadas despois, Barbara McClintock e Harriet Creighton demostraron que o sobrecruzamento cromosómico ten lugar durante a meiose, (o proceso de división celular mediante o cal se forman os espermatozoides e óvulos).