只有百分之九的对照组成员拥有从父母那分别继承而来的两个CETP保护模式副本，而在长寿组里有百分之二十四的成员拥有，其中四个Kahn家族兄弟姐妹都有这个基因。
Only about 9 percent of control subjects have two copies (one from each parent) of the protective form of CETP, while 24 percent of the centenarians do, including all four Kahn siblings.
事实上，在你找到四个队友大家欢乐的在一个个副本里消磨掉一整天时光这事背后隐藏着一套复杂的队伍匹配算法。
Well, it gets a bit complicated when you take into account all of the dungeons the other four players with whom you are grouped have run in a given day.
叶绿体基因(Chloroplast DNA)远比核基因(nuclear DNA)丰富，因为每个植物细胞可以有数千个叶绿体基因，但是每个核基因只有两个到四个核基因副本。
Chloroplast DNA is vastly more abundant than nuclear DNA, since each plant cell can have thousands of copies of chloroplast genes but just two to four copies of each nuclear gene.
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