For example, siblings do not have to grow up together for their resemblance to be evolutionarily meaningful, owing to their common genes. Even when it comes to morphology, personality, and life-history traits – such as age at sexual maturity and fertility – related individuals’ likeness often has a genetic basis.
比方说，兄弟姐妹不一定非要一起长大才会表现出进化相似度，而这要归功于他们共同的基因。即使牵涉到形态、个性和性成熟及生殖力等各项生活史特征，相关的个体相似度往往可以找到遗传原因。