Okajima M, Yosida T H
J Hered. 1986 May-Jun;77(3):169-74. doi: 10.1093/oxfordjournals.jhered.a110209.
Inheritance of dermatoglyphic configurations was studied on the palmar III interdigital pad of the rat (Rattus norvegicus). Four rats from each of the WKS and ACI/N inbred strains were mated with each other, and 54 F1 and 88 F2 hybrids were obtained. In addition, 52 offspring were produced by backcross mating between F1 hybrids and WKS and ACI/N parents. Whorls were the predominant pattern in the WKS strain and triradial patterns characterized the ACI/N strains. The F1 hybrids showed a wide range of pattern types, consisting of whorls, loops, cusps, arches, and triradial patterns. These patterns were intermediate in size between the two inbred strains. The F2 hybrids presented a distribution of patterns with a similar range as the F1, but the frequencies of some types were different. Patterns in the offspring of each backcross demonstrated a slight shift towards the characteristic pattern of the parental inbred strain. No sex difference was observed. Generally, the bilateral differences were striking, with a radial direction predominating on the left palm, and an ulnar one on the right palm, respectively. This study suggests that the dermal patterns are genetically determined, but also are influenced by environmental factors, especially in the hybrids.
对大鼠（褐家鼠）手掌第三指间垫的皮纹形态遗传进行了研究。将WKS和ACI/N近交系的四只大鼠相互交配，获得了54只F1代和88只F2代杂种。此外，F1代杂种与WKS和ACI/N亲本进行回交，产生了52只后代。涡纹是WKS品系中的主要图案类型，而三叉辐射图案是ACI/N品系的特征。F1代杂种呈现出广泛的图案类型，包括涡纹、箕纹、尖纹、弓纹和三叉辐射图案。这些图案的大小介于两个近交系之间。F2代杂种的图案分布范围与F1代相似，但某些类型的频率有所不同。每个回交后代的图案都略微向亲本近交系的特征图案偏移。未观察到性别差异。一般来说，双侧差异显著，左手掌以桡侧方向为主，右手掌以尺侧方向为主。这项研究表明，皮肤图案是由基因决定的，但也受到环境因素的影响，尤其是在杂种中。
