肖海姆注意到一些奇怪的现象：隔离了几十年的流感病毒有时表现出很少的遗传漂变迹象。

But Shoham noticed something strange: Influenza viruses isolated decades apart sometimes showed little sign of genetic drift.

肖海姆注意到一些奇怪的现象：隔离了几十年的流感病毒有时表现出很少的遗传漂变迹象。

But Shoham noticed something strange: Influenza viruses isolated decades apart sometimes showed little sign of genetic drift .

这主要是由于其有很强的萌蘖繁殖能力,这种无性繁殖方式降低了小种群中遗传漂变和近交对遗传多样性的影响,使七子花的遗传变异得到维持.

This ability decreases the negative effects of drift and inbreeding on genetic diversity in small populations.