DNA is a strand of each individual gene combined. A gene is a portion of DNA that contains both coding sequences that determine what the gene does, and non-coding sequences that determine when the gene is active. DNA is the mixture and makeup of all your genes, and each person’s is different.
DNA is the chemical information database that provides the complete set of instructions that a cell would ever need. Within DNA are genes, subunits of DNA that encode instructions that a cell uses to make specific proteins and enzymes necessary for a cell to function. Each cell contains the same genes and DNA. Only specific genes are activated within each cell to create different types of cells throughout an organism.
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