Question

Explain how cancer occurs in a living organism?

Answer 1

There are various reasons for developing cancer but there are 3 main levels cause cancer: DNA level Damage, RNA level damage and protein level damage.

Explanation:

At DNA level: wrong DNA repair, wrong replication,mutations in DNA ploymerases etc.
At RNA level: wrong transcription,wrong posttrancriptional modification,wrong RNA editing and alternative splicing.etc.
At protein level: wrong translation causes nonsense mutation,misense mutation and frameshift mutation,protein misfolding,wrong protein traficking,mutations in mRNA,rRNA and tRNAs. These uncertain changes definitely promote cancer.