There appeared to be little gene flow between the two groups, suggesting that they rarely interbred.

这两个群体之间的基因流通似乎很少，表明它们很少进行杂交。

A similar situation can happen with gene flow, when new alleles are introduced to a population through migration.

类似的情况也会发生在基因流动中——新的等位基因通过迁徙被引入到一个群体之中。

In science, we refer to this movement as gene flow.

科学上称之为基因流动。

He also questioned whether an Anthropocene epoch is needed, saying: " We are but a ripple in the river of gene flow through time."

他还质疑是否需要一个人类世时代，他说：“我们只是基因长河中的一个涟漪。”

Now, if a new variation is occasionally introduced by gene flow from a different population - like if new breeding adults join the group - it can be enough to provide what's known as a genetic rescue.

现在，如果来自不同种群的基因流偶尔会引入一种新的变异——比如新的成年繁殖者加入该群体——就足以提供所谓的基因拯救。