Fig. 6From: Distant hybrids of Heliocidaris crassispina (♀) and Strongylocentrotus intermedius (♂): identification and mtDNA heteroplasmy analysisIdentification of the Heliocidaris crassispina (♀) × Strongylocentrotus intermedius (♂) hybrids. a: 30 H. crassispina from the Fujian population. Electrophoresis gel, showing the PCR products amplified using the identification primer pairs. b: 30 H. crassispina (♀) × S. intermedius (♂) hybrids. Electrophoresis gel, showing the PCR products amplified using the identification primer pairBack to article page