I assume here that you mean the transcription of DNA to RNA (which already answers your question! the source is the DNA!) DNA is the genetic code kept in the nucleus. It must be copied (transcription) to RNA which caries to the ribosomes, which will read the code.
Answer:
<em><u>Convergent boundaries</u></em>
Convergent boundaries are areas where plates move toward each other and collide. These are also known as compressional or destructive boundaries. Subduction zones occur where an oceanic plate meets a continental plate and is pushed underneath it.
Bull run was the first land battle of the civil war.
Answer :mRNA is used to transfer genetic information by a cell.
Explanation:
hope that helped!