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单词 spiral cleavage
释义

spiral cleavage

noun

: holoblastic cleavage that is typical of protostomes and that is characterized by arrangement of the blastomeres of each upper tier over the cell junctions of the next lower tier so that the blastomeres spiral around the pole to pole axis of the embryo compare radial cleavage

Word History

First Known Use

1892, in the meaning defined above

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更新时间:2024/9/21 22:07:00