Tetracy-cline

常见例句

Such a range of variation is termed a cline.
这样一个变异区域称为梯度变异。
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Along a cline, subspecies with distinct characteristics may arise.
在变异群中，带有明显特征的亚群可能产生。
Often, individuals at either end of a cline are reproductively isolated.
通常,在变异群两端的个体是繁殖隔离的。
Callaham and Liddicoet found an elevational cline in ponderosa pine from Northern California.
卡拉汉和利狄柯特发现加利福尼亚北部产的黄松有一海拔渐变群。
This cline exists along a transect from the Sacramento Valley to near the crest of the Sierra Nevada Mountains.
这一渐变群是沿着萨克拉曼多谷地到西瓦内华达山脊的植被带存在的。