According to the researchers, however, larger social groups make it more difficult to identify members, prompting the evolutionary drive for individual uniqueness.

不过，根据研究人员的说法，更大的社会群体让识别个体成员更加困难，从而产生了个体独特性的进化动因。

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This shuffling of the genetic pack is the source our individual uniqueness.

FORBES: The Human Genome at Ten