cells

The architectural drawing of the jail has the blueprint of a cell.

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Nucleus contains structures composed of DNA (helical molecules) that are combined with proteins called chromatin. Chromatin coils around itself and shortens to form chromosomes during prophase of mitosis, or prophase of meiosis I when on its way to form gametes by first forming germ cells. Anywho, DNA strands are composed of units called genes (which are just segments of the DNA that determines how a cell will live and function), thus, it is common for people to mention that "DNA is the blueprint of life."
I suggest you hit the books if you didn't understand what I just conveyed.