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Fig. 4 | BMC Genetics

Fig. 4

From: Formation of diploid and triploid hybrid groupers (hybridization of Epinephelus coioides ♀ × Epinephelus lanceolatus ♂) and their 5S gene analysis

Fig. 4

Triploidization processes in the hybrid. Control: embryo sections of E. coioides. Triploidization: triploidizition processes of the hybrid embryos. a the second meiosis telophase stage, white arrow in the control group indicated the formation of second polar body nucleus, white arrow in hybrid group indicated the excluding of the second polar body, the black arrows in this stage indicated the reserved pronuclei. b pronuclei fusion stage, white arrows in this stage indicated the combined pronuclei. c anaphase stage in the first cell division, white arrows in this stage indicated the spindle bodies. d telophase stage of the first cleavage, white arrows in this stage indicated the spindle bodies, black arrows in this stage indicated the cell plate. Bars = 20 μm

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