Research Article
F1 and F2 Backcrosses in the Hybrids Between Two Unnamed Genetically Distinct Species of Tropical Sea Urchins, Echinometra sp. A and Echinometra sp. C
Graduate School of Engineering and Science, University of the Ryukyus, 1 Senbaru, Nishihara-cho, Okinawa 903-0213, Japan
Tsuyoshi Uehara
Graduate School of Engineering and Science, University of the Ryukyus, 1 Senbaru, Nishihara-cho, Okinawa 903-0213, Japan