Operator gene

Medical Dictionary

operator gene n.
A gene that interacts with a specific repressor to control the functioning of the adjacent structural genes.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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WordNet
operator gene

noun
a gene that activates the production of messenger RNA by adjacent structural genes 
WordNet® 3.0, © 2006 by Princeton University.
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00:10
Operator gene is always a great word to know.
So is interrobang. Does it mean:
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
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