Why is retrovirus used to treat hemophilia?

Patient has just received an organ transplant which treatment would be most effective in preventing the patient’s body from

Label the steps for protein synthesis in order, beginning with the first steponce the protein is made, the gene for a particular trait is expressedmrna joins the ribosome, and the anticodons from trna join mrna to form a chain ofamino acidsrna polymerase unzips dna and free rna nucleotides join dna to form mrnav a chain of amino acids is formed from peptide bonds, creating a proteinmrna is transported from the nucleus of the cell to the ribosomes of the cell.

The backbone of the double helix has an alternating molecules. what do you call these alternating molecule?