Reports from Harvard University, U.S., describe recent advances in genetics research

Study 1: A new study, "Diluting the founder effect: cryptic invasions expand a marine invader's range," is now available. "Most invasion histories include an estimated arrival time, followed by range expansion. Yet, such linear progression may not tell the entire story," scientists in the United States report.

"The European green crab (Carcinus maenas) was first recorded in the US in 1817, followed by an episodic expansion of range to the north. Its population has recently exploded in the Canadian Maritimes. Although it has been suggested that this northern expansion is the result...

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