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.
Chromatin is the complex combination of DNA and protein that makes up chromosomes. The functions of chromatin are to package DNA into a small volume to fit in the cell, to str â¦ engthen the DNA to allow mitosis and meiosis, and to serve as a mechanism to control DNA expression and replication.