Explain the relationship between cells, chromosomes, genes and DNA.

gene gene is the structural and functional unit of haredity  DNA and chromosome are als a heradity materials which present in the nucleus of the cell they help in the transfor of charateries to the next generation

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.