齿蟾
齿蟾-
一种改进的齿突蟾动物肌肉线粒体DNA提取方法
An improved method for isolation of animal muscle mitochondrial DNA
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对其进行再研究发现，宁陕齿突蟾伏牛山居群与模式产地居群的主要特征共同之处为，吻端钝圆；
The Funiu population was coincident with population of type locality in diagnosis characteristics as : snout obtusely rounded ;
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后一种，即皱纹齿突蟾分别是前三种的多态性变体；这些变体以相同性状（即皮肤多瘭疣）同时表现在三个种中的现象，属于平行多态现象。
The fact that these variants exhibit the same character ( numerous warts on the skin ) simultaneously in three closely related species is an expression of parallel polymorphism .