Polyploidy is a mechanism often attributed to causing some speciation events in sympatry.

多倍当作引起在地区并存的物种发物种形成事件的种机制。

Autopolyploidy A type of polyploidy involving the multiplication of chromo-some sets from only one species.

通是由体，纯种的染色体数目加倍而成的多倍现象。