The genetic switch involves acetylation, the introduction of an acetyl group into a molecule at the DNA level of chromatin resulting in genetic transcription.

基因“开关”涉及乙酰化作用，也就是将乙酰基群在染色质的DNA水平上引入到分子中，由此完成基因转录。

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Transcription is the first major step in gene expression, and constitutes an important point of genetic information flow.

基因转录是遗传信息传递和表达的枢纽，是基因表达调控机制发挥作用的重要环节。

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Functional aspects of nuclear: : It is the largest organelle in the cell and the place for genetic storage, replication and transcription.

细胞核的功能：细胞核是真核细胞中最大的细胞器，也是遗传物质储存、复制和转录的场所。

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