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

The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.

What is a cordon and where is it found

Which chemical equation is unbalanced? which chemical equation is unbalanced