Tetracy-cline

基本解釋

Such a range of variation is termed a cline.
這樣一個(gè)變異區(qū)域稱為梯度變異。
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Along a cline, subspecies with distinct characteristics may arise.
在變異群中，帶有明顯特征的亞群可能產(chǎn)生。
Often, individuals at either end of a cline are reproductively isolated.
通常,在變異群兩端的個(gè)體是繁殖隔離的。
Callaham and Liddicoet found an elevational cline in ponderosa pine from Northern California.
卡拉漢和利狄柯特發(fā)現(xiàn)加利福尼亞北部產(chǎn)的黃松有一海拔漸變?nèi)骸?/li>