請給我一些有關遺傳有趣照片、新聞或文章,或解釋一下裏頭的內容
http://www.popsci.com/article/science/your-dog-might-have-some-its-older-siblings-cells?dom=PSC&loc=recent&lnk=5&con=img-typeoffoafimage-srchttpwwwpopscicomsitespopscicomfilesstylesarticleimagelargepublicpuppiesjpgitoknvoozele-alt-
像這裡面的狗為何有Y染色體又是母的?