DNA isn't really copied, it's more so split into 2 parts.
DNA is split into 2 parts during mitosis, more exactly the 5th stage called anaphase. chromosomes, which hold DNA< are split into 2 (genetically identical) groups, and each respective group goes to one spindle or another, readying for the last phase of mitosis and eventually cytokinesis.
They are used in manufacturing of drugs(antibiotics ) like penicillin that is used to save lives
They are used in the production of chemicals like pesticide
They are good source of citric acid(vitamin C)
They help in the breakdown of plant fibre and allows the nutrients to be released into the soil
They are used as model research organism
Scientific investigations on Sudbury's soil revealed the decrease
in soil pH was correlated with increased copper and nickel levels.
