What is DNA?
DNA is a molecule it is a bunch of atoms stuck together. The molecules are called nucleotides. The nucleotides has 3 parts to it. DNa is a double helix, as you can see with our model. DNA carries genetic instructions for growth and development.
What DNA does
Our DNA carries our genetic instructions, it pretty much stores long term instructions.
How it copies itself
Our cells are constantly copying themselves. It’s called replication. It will copy itself over a trillion times over a life time. The helicase unwinds the double helix of DNA. When the replication starts it is known as the replication fork. Then the RNA primase adds stuff, and then DNA polymerase does the rest.