1.The presence of valves 2.the milking action of skeletal muscles 3. the veins as the muscles contract
<span>Unzipping. - DNA double helix unwinds to expose a sequence of nitrogenous bases. ...Transcription. A copy of one of the DNA strand is made. ...Translation (Initiation) mRNA couples w/ ribosome & tRNA brings free amino acids to ribosomes.Elongation. - Anticodon of tRNA recognizes codon on mRNA. ...<span>Termination.</span></span>
