决定性卵裂 determinate cleavage

互联网2013-11-14

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在动物卵裂中，象镶嵌卵那样，其卵裂球未来的发育方向各已决定，这种卵裂称为决定性卵裂。与此相反像调节卵那样，未来的发育方向均未决定，因而产生的卵裂球在发育能力上相互没有差异，这样的卵裂称为非决定性卵裂（indeterminate cleavage）。

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