When marauding Vikings decided to settle down they usually "went native,'' marrying local girls and blending in. Invading honey bees may be doing the same. The invasion of new bee populations has attracted attention in recent years with the spread of so-called Africanized, or "killer bees'' moving north from South America.
When a new strain of bees invades a region already populated by honey bees, they interbreed and gain benefits from the genes of their predecessors, researchers report in this week's edition of Proceedings of the National Academy of Sciences.
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