奇闻:双胞胎肤色竟一黑一白
<p><span word="Kaydon">Kaydon</span> <span word="and">and</span> <span word="Layton">Layton</span> <span word="Wood">Wood</span> <span word="are">are</span> <span word="just">just</span> <span word="five">five</span> <span word="yet">yet</span> <span word="already">already</span> <span word="they">they</span> <span word="are">are</span> <span word="local">local</span> <span word="celebrities">celebrities</span>. <span word="In">In</span> <span word="fact">fact</span>, <span word="the">the</span> <span word="twins">twins</span> <span word="have">have</span> <span word="been">been</span> <span word="making">making</span> <span word="headlines">headlines</span> <span word="in">in</span> <span word="regional">regional</span> <span word="newspapers">newspapers</span> <span word="since">since</span> <span word="they">they</span> <span word="were">were</span> <span word="born">born</span> – <span word="because">because</span> <span word="one">one</span> <span word="is">is</span> <span word="white">white</span> <span word="and">and</span> <span word="the">the</span> <span word="other">other</span> <span word="black">black</span>.</p><p><span word="Kaydon">Kaydon</span> 和<span word="Layton">Layton</span> <span word="Wood">Wood</span>仅仅只有五岁，但是他们已经是当地的名人了。实际上，这对双胞胎一出生就出现在在地区资讯头条，因为他们的一个是白皮肤，一个却是黑皮肤。</p><p><span word="Each">Each</span> <span word="year">year</span>, 12,000 <span word="sets">sets</span> <span word="of">of</span> <span word="twins">twins</span> <span word="are">are</span> <span word="born">born</span> <span word="in">in</span> <span word="Britain">Britain</span>. <span word="Of">Of</span> <span word="these">these</span>, 385 <span word="of">of</span> <span word="them">them</span> <span word="are">are</span> <span word="black">black</span> <span word="or">or</span> <span word="mixed">mixed</span> <span word="race">race</span>, <span word="but">but</span> <span word="those">those</span> <span word="like">like</span> <span word="Kaydon">Kaydon</span> <span word="and">and</span> <span word="Layton">Layton</span> <span word="are">are</span> <span word="rare">rare</span>.</p><p>英国每年有12000对双胞胎出生，其中385对是黑色或混血种族。但是像<span word="Kaydon">Kaydon</span> 和<span word="Layton">Layton</span> <span word="Wood">Wood</span>这样的非常稀少.</p><p><span word="Dr">Dr</span> <span word="Jim">Jim</span> <span word="Wilson">Wilson</span>, <span word="a">a</span> <span word="population">population</span> <span word="geneticist">geneticist</span> <span word="at">at</span> <span word="the">the</span> <span word="University">University</span> <span word="of">of</span> <span word="Edinburgh">Edinburgh</span>, <span word="explains">explains</span>: “<span word="Since">Since</span> <span word="parents">parents</span> <span word="contribute">contribute</span> 50 <span word="per">per</span> <span word="cent">cent</span> <span word="of">of</span> <span word="the">the</span> <span word="genes">genes</span> <span word="each">each</span> <span word="to">to</span> <span word="an">an</span> <span word="off">off</span><span word="spring">spring</span>, <span word="the">the</span> <span word="first">first</span> <span word="generation">generation</span> <span word="born">born</span> <span word="to">to</span> <span word="a">a</span> <span word="mixed">mixed</span>-<span word="race">race</span> <span word="couple">couple</span> <span word="will">will</span> <span word="definitely">definitely</span> <span word="be">be</span> <span word="midway">midway</span> <span word="in">in</span> <span word="colour">colour</span> <span word="between">between</span> <span word="the">the</span> <span word="two">two</span>. <span word="But">But</span> <span word="second">second</span>-<span word="generation">generation</span> <span word="children">children</span> <span word="are">are</span> <span word="different">different</span>. <span word="If">If</span> <span word="one">one</span> <span word="of">of</span> <span word="the">the</span> <span word="offspring">offspring</span> <span word="marries">marries</span> <span word="a">a</span> <span word="white">white</span> <span word="person">person</span>, <span word="it">it</span> <span word="is">is</span> <span word="possible">possible</span> <span word="for">for</span> <span word="them">them</span> <span word="to">to</span> <span word="have">have</span> <span word="a">a</span> <span word="white">white</span> <span word="child">child</span>. <span word="It">It</span> <span word="is">is</span> <span word="not">not</span> <span word="certain">certain</span> <span word="actually">actually</span>. <span word="One">One</span> <span word="child">child</span> <span word="in">in</span> <span word="ten">ten</span> <span word="is">is</span> <span word="now">now</span> <span word="mixed">mixed</span> <span word="race">race</span>, <span word="which">which</span> <span word="potentially">potentially</span> <span word="means">means</span> <span word="black">black</span> <span word="and">and</span> <span word="white">white</span> <span word="twins">twins</span> <span word="will">will</span> <span word="become">become</span> <span word="far">far</span> <span word="more">more</span> <span word="common">common</span>. ”</p><p>爱丁堡大学人口遗传学家<span word="Jim">Jim</span> <span word="Wilson">Wilson</span>博士解释说：“父母对后代各占50%的遗传基因，第一代混血儿在肤色上肯定会中和父母双方的肤色。但第二代混血儿就不同了。如果第一代混血儿和白种人结婚，他们就很可能会生一个白种孩子；当然情况也未必一定。现在十分之一的孩子是混血人种，潜在的意思是一黑一白的双胞胎将会变得更加常见。”</p>
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