mǒu / xiē / shēn / tǐ / tè / zhēng / de / chóng / xīn / chū / xiàn / kě / néng / bèi / chēng / wéi / fǎn / zǔ / xiàn / xiàng某些身体特征的重新出现可能被称为返祖现象。The reappearance of certain physical traits may be called atavism.