CPX079: 0.1 inch (2.54 mm) pitch polarizing key. Insert used to block hole of header connector, for correct connection / orientation to motherboard pin-outs.
The function of DNA in a cell is to code the way proteins turn genes on or off. the function of DNA is to make the proteins. DNA is the foundation of life. It's a complex molecule made up of four types of bases, cross connected like a staircase, and twisted into a spiral.
DNA is the code that directs a cell's actions. In eukaryotes (cells with nuclei, like you have), the DNA is stored in the nucleus. When a gene (a segment of DNA coding for a s â¦ pecific trait) is expressed, a protein is made to fulfill some cell function.