Sodium is a chemical element with the chemical symbol Na. It is an alkali metal with the atomic number 11. We know that substances are made up of various atoms, and each atom has a specific chemical identity. It (an atom) is said to be chemical element, and has all the characteristics of that element.
Tax season discounts available now. DNA paternity testing determines the biological father of a child. We all inherit our DNA from our biological parents â half from our mother and half from our father. A DNA paternity test compares a childâs DNA pattern with that of the assumed father to determine if there is a match.
Paternity Tests: Blood Tests and DNA. Download article as a PDF. Paternity can be determined by highly accurate tests conducted on blood or tissue samples of the father (or alleged father), mother and child. These tests have an accuracy range of between 90 and 99 percent.