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Catania, C. (2013, November 23). New Study Indicates That Y Chromosome May Be Unnecessary

           For Reproduction. Daily News. Retrieved December 6, 2013, 

           from http://dailynewsen.com/2013/11/23/new-study-indicates-that-y-chromosome-may-be-

           unnecessary-for-reproduction.html                

Fraser, D., LeDrew, B., Vavitsas, A., & White-McMahon, M. (2012). Biology 12 University Preparation
           Toronto: Nelson

 Genetic Home Reference. (2013, December 3). SRY. - sex determining region Y. Retrieved

           December 6, 2013, from http://ghr.nlm.nih.gov/gene/SRY

Link To Article - http://dailynewsen.com/2013/11/23/new-study-indicates-that-y-chromosome-may-be-unnecessary-for-reproduction.html