73.1k views
4 votes
In negative control, a gene is switched off when ________. lactose is transported into the cell a regulatory protein is removed from DNA and shuts down transcription a kinase adds a phosphate to DNA a regulatory protein binds to DNA and shuts down transcription

1 Answer

3 votes

Answer: a regulatory protein binds to DNA and shuts down transcription

Step-by-step explanation:

Cells have the ability to control their level of gene expression, known as gene regulation. This is a process where genes can be turned on and of (like a kitchen tap) to ensure that genes are expressed at the right time and are the right genes being "created."

For example, a regulatory protein will bind to the DNA's promoter region to stop transcription. This expression prevents any further production of mRNA (messenger RNA).

User Sujatha Girijala
by
8.5k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.