Male mouse lacking any Y chromosome genes, 2 years 1 month old. This material relates to a paper that appeared in the Jan. 29, 2016 issue of Science, published by AAAS. The paper, by Y. Yamauchi at University of Hawaii in Honolulu, HI, and colleagues was titled, "Two genes substitute for the mouse Y chromosome for spermatogenesis and reproduction."
Please cite the owner of the material when publishing. This material may be freely used by reporters as part of news coverage, with proper attribution. Non-reporters must contact Science for permission.