Genetic engineering is the manipulation of genes using cloning and transformation to change the gene structure. genetic engineering has many positive outcomes. for example, a) gene therapy might cure one defect while creating another. b) genetic modification of foods can increase their medicinal value. c) increasing the taste of crops while decreasing the nutritional value. d) gene transfers of resistance genes increase possibility of disease agents.

You have just sequenced a new protein found in mice and observe that sulfur-containing cysteine residues occur at regular intervals. what is the significance of this finding? it will be important to include cysteine in the diet of the mice. cysteine residues are required for the formation of α helices and β pleated sheets. cysteine residues are involved in disulfide bridges that form tertiary structure. cysteine causes bends, or angles, to occur in the tertiary structure of proteins.