Partial karyotypes of Pygoscelis penguins a P. antarcticus 2n = 92 b P. papua 2n = 94 c P. adeliae 2n = 96 in males and 2n = 95 in females.

 
 
  Part of: Gunski RJ, CaƱedo AD, Garnero ADV, Ledesma MA, Coria N, Montalti D, Degrandi TM (2017) Multiple sex chromosome system in penguins (Pygoscelis, Spheniscidae). Comparative Cytogenetics 11(3): 541-552. https://doi.org/10.3897/CompCytogen.v11i3.13795