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.
Letâs look at this example concerning a paternity test. First, it is important to understand that all of us as humans share 99.9% of the same genetic code. So what we are really testing is a very small amount of DNA that helps identify who is part of our biological family.