相反，那些带有一长一短，或者两短“版本”启动子基因的人就没有这种保护性的偏爱，而这种基因组合可能使得神经节中的血清素含量更高。

By contrast, those who had either a long and a short version of the gene, or two short versions (and thus, presumably, more serotonin in the junctions), did not have such protective biases.

youdao

自己尝试一下：在带有以“We should raise…”开头的长注释块和不带这一长注释块这两种情况下，运行stat - comments . pl，并查看统计信息的差异。

Try it for yourself: Run stat-comments.pl with and without the long comment block that begins with "We should raise...", and see the difference in statistics.

youdao