Answer:
b. transcriptional control of gene expression.
Explanation:
The binding sites of transcription factors (enhancers and silencers) can activate or deactivate, respectively, a gene in specific parts of the body.
Some genes must be expressed in a part of the body. For example, if you need to activate a gene in the spine, skull and toes, but not in the rest of the body, how can transcription factors do this task?
As a gene of this type of pattern it can have several enhancers or silencers, where each one can activate or repress the gene of a specific type of cell or part of the body, joining transcription factors that occur in that specific part of the body.
The correct answer is Water, H2O. One oxygen and 2 hydrogen ions.
Your answer should be A. 20%
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They have chemoreceptors on their arms.
Answer:
No
Explanation:
Red blood cells don’t reproduce. They only survive for 120 days in our blood before they are broken down into parts that are then recycled by a special type of white blood cell.
