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It's no secret that good genes can explain why some people age well. But researchers said last Thursday they have identified a specific gene variant that can make people look about two years older than their actual age. 众所周知，有些人看起来比较年轻的原因是拥有优良的基因。但研究人员在上周四表示，他们鉴定出一种特殊的基因变异，能使人们看起来比实际年龄要老两岁。 Scientists already know that the gene in question, known as MC1R, is responsible for producing red hair and pale skin, according to the report in the journal Current Biology. But now they have identified a variation in this gene that seems to age people faster. 据《当代生物学》期刊报道，科学家们已经认识到这种被称为MC1R的基因会导致头发发红、皮肤苍白。但是现在，他们在这种基因里发现了能使人们老得更快的变异。 "For the first time, a gene has been found that explains in part why some people look older and others younger for their age," said researcher Manfred Kayser of Erasmus MC University Medical Center Rotterdam in the Netherlands. 荷兰鹿特丹市伊拉斯谟大学医学中心的研究员曼弗雷德·凯瑟尔说：“我们第一次发现，基因可以在一定程度上解释为什么有些人显老，而有些人显年轻，” | 
