Primary Meanings of fold. 1  v bend or lay so that one part covers the other. 2  v become folded or folded up. 3  n the act of folding.  n an angular or rounded shape made by 1  folding. n a folded part (as in skin or muscle)  n a geological process that causes a bend in a stratum of 1  rock. n a pen for 2  sheep. n a group of sheep or  goats.
Each gene has a special job to do. The DNA in a gene spells out specific instructionsâmuch like in a cookbook recipe â for making proteins (say: PRO-teens) in the cell. Proteins are the building blocks for everything in your body. Bones and teeth, hair and earlobes, muscles and blood, are all made up of proteins.
What DNA Does. Â­DNA carrÂ­ies all of the information for your physical characteristics, which are essentially determined by proteins. So, DNA contains the instructions for making a protein.In DNA, each protein is encoded by a gene (a specific sequence of DNA nucleotides that specify how a single protein is to be made).he particular sequence of amino acids in the chain is what makes one protein different from another. This sequence is encoded in the DNA where one gene encodes for one protein. The genetic code consists of 3-base words or codons that specify particular amino acids.