Explain why different cells with different jobs still have identical DNA in their nucleus. How does this work?

Every nucleus has the same subjects in your body, they might have different jobs to do in the human body but they are allthe same DNA type because oh the blood strans.

Explanation:

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.