花朵的祖先像白莲花和白百合结合体
<p><span word="All">All</span> <span word="living">living</span> <span word="flowers">flowers</span> <span word="ultimately">ultimately</span> <span word="derive">derive</span> <span word="from">from</span> <span word="a">a</span> <span word="single">single</span> <span word="ancestor">ancestor</span> <span word="that">that</span> <span word="lived">lived</span> <span word="about">about</span> 140 <span word="million">million</span> <span word="years">years</span> <span word="ago">ago</span>, <span word="a">a</span> <span word="study">study</span> <span word="suggests">suggests</span>.</p><p>一项研究表明，地球上现存的所有花卉都起源于1.4亿年前的同一个“祖先”。</p><p><span word="Scientists">Scientists</span> <span word="combined">combined</span> <span word="models">models</span> <span word="of">of</span> <span word="flower">flower</span> <span word="evolution">evolution</span> <span word="with">with</span> <span word="the">the</span> <span word="largest">largest</span> <span word="data">data</span> <span word="set">set</span> <span word="of">of</span> <span word="features">features</span> <span word="from">from</span> <span word="living">living</span> <span word="flowers">flowers</span> <span word="ever">ever</span> <span word="assembled">assembled</span>.</p><p>科学家将花卉演化的模型与最大的现存鲜花的特征数据集组合在一起。</p><p><span word="From">From</span> <span word="this">this</span> <span word="the">the</span> <span word="team">team</span> <span word="was">was</span> <span word="able">able</span> <span word="to">to</span> <span word="infer">infer</span> <span word="the">the</span> <span word="appearance">appearance</span> <span word="of">of</span> <span word="the">the</span> <span word="ancestral">ancestral</span> <span word="flower">flower</span>.</p><p>该研究团队据此推测出鲜花始祖的样貌。</p>
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