众所周知,在正常情情况下,母猪不会变成公猪,母鸡也不会变成公鸡,雌鲤鱼也不会变成雄鲤鱼。然而,体型似蛇的黄鳝在一生中,却是先作“妈”后当“爸”,要经过由雌变雄的过程呢!这种性逆转现象,不仅在鱼类难找二例,在所有脊椎动 As we all know, under normal circumstances, the sow does not become a boar, the hen does not become a cock, the female carp will not become a male carp. However, the shape of a snake eel in his life, but it is first as a “mother” after the “dad”, to go through the process of male and female too! This phenomenon of sexual reversal, not only in the fish difficult to find two cases, All vertebral movements