A few genes produce regulatory molecules that help the cell assemble proteins.) The journey from gene to protein is complex and tightly controlled within each cell. It consists of two major steps: transcription and translation. Together,transcription and translation are known as gene expression.
The codes used to build a specific polypeptide chain is contained within the base sequence of DNA. A length of DNA that holds the code for a polypeptide chain is called a gene. Amino acids link together to form a polypeptide chain and then fold into a protein.
If the mantle is made out of soft rock, then I think it would melt due to the heat, but if it was hard, it would just burn, so I firmly believe the rock is hard.
