A) polymorphic genes
B) operator genes
C) represser genes
D) regulatory genes
Correct Answer: D
Solution :
A gene is an ordered string of nucleotides that encodes a polypeptide. Such genes are structural genes we also known that genes can also encode RNA, including mRNA, tRNA, rRNA. But sometimes has to turn on and terminte gene expression, as well as regulate it. So, the regulatory sequences, which may be promotors located for away from the coding region. Regulator genes involved in turning on or off the production of mRNA of a set of structural gene in cooperation with a chemical compound called inducer.
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