Rat mothers exhibit natural variations in care that propagate between generations of female offspring. However, there is limited information on genetic variation that could influence this propagation.

中文翻译：

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个体间舔舔和多巴胺基因型在雌性大鼠后代的以后舔食供给中的作用

老鼠妈妈表现出自然的变异，在雌性后代之间传播。但是，关于遗传变异的信息有限，可能会影响这种繁殖。