What DNA is?
DNA is a abbreviation which stands for deoxyribonucleic acid. DNA looks like a twisted ladder (two strands wrap around each other in a spiral shape.
What DNA does?
DNA is the molecule that has the master set of instructions for how cells function, what they will produce, and when they will die.
How it copies itself?
The replication of DNA occurs in 3 ways, the opening of the double helix and departure of the DNA strands, the preparation of the template strand, and the assembly of the new DNA segment.
Sources:
https://www.nature.com/scitable/topicpage/cells-can-replicate-their-dna-precisely-6524830/
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