0845 numbers, for example, are free to call for up to an hour, during the inclusive minutes of your call package if you're a BT customer. Yet call an 0844 number and you'll be charged up to 5.1p/minute, plus a connection fee of up to 15p.
The resulting mRNA is a single-stranded copy of the gene, which next must be translated into a protein molecule. During translation, which is the second major step in gene expression, the mRNA is read according to the genetic code, which relates the DNA sequence to the amino acid sequence in proteins (Figure 2).
The purpose of transcription is to produce a protein with a  specific function.    DNA is copied into a strand of mRNA and mRNA is read and copied  into a protein to â¦ carry out some function for the cell.    It is the first step in protein synthesis.    /  .2 people found this useful. Because DNA is a much stable molecule than RNA. However, in many viruses genetic information is encoded in their RNA. Consequently, these viruses mutate at a very high r â¦ ate and change constantly to avoid onslaught from the host's immune system.