某些原生动物或真菌中发生于或在单个细胞内细胞核的接合作用。
The union of nuclei within and arising from a single cell, as in certain protozoans and fungi.
原核生物基因水平转移的主要方式有转化、接合和转导，真核生物中水平转移发生方式尚不清楚。
Transformation, conjugation, and transduction are the main forms of horizontal gene transfer in prokaryotes, but no clear clue was related with the mechanism of horizontal gene transfer in eukaryotes.
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