TY - JA AU - Anderson,E.G. TI - Crossing over in a case of attached x chromosomes in Drosophila Melanogaster PY - 1925/// N1 - Peer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=1943-2631 T2 - Genetics ER -