Men who had two copies of allele 334 were twice as likely to have had a marital or relationship crisis in the past year than those who lacked the gene variant, the statement said.

• 研究小组发现，携带一个或两个这种名为“334型等位基因变种”的男性与没有这种基因变种的男性相比，对待婚姻或感情的态度有所不同。