Although advance has been made in the study on control of globin gene expression and switching, key factors of globin gene switching is still unknown till now.

虽然对于珠蛋白基因表达调控及开关的研究已取得许多进展，但至今对于调节这些开关的决定性调节因子仍不明确。

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He discovered that the activation of a gene called Toll is crucial for switching on the initial immune response that allowed his flies to fight off infection.

他发现Toll基因的激活对启动能帮助果蝇抵御感染的固有免疫反应尤为关键。

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In the brothers, it seems the mutated RSPO1 gene could not fulfil its switching-off role, leaving SOX9 on and leading to male development.

四兄弟的突变的RSPO1基因可能失去其关闭SOX9基因的功能，所以向男性发育。

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Ariads scientists will try to prod the gene into producing more or less bone formation protein, switching the gene on and off.

FORBES: A hail of silver bullets

HERC2 has no effect on eye color, but it contains an unexpressed segment of DNA that is needed for the switching on of a nearby gene called OCA2, as demonstrated by newly published work by Robert-Jan Palstra and others at Erasmus University in the Netherlands.

WSJ: Matt Ridley on Human Culture's Effect on Genes | Mind & Matter

Although Monsanto has promised to put its terminator-gene system in deep-freeze, the molecular switching that underlies it remains a hot topic at many of the world's leading agri-biotechnology firms.

ECONOMIST: Terminator genes