Why DNA is a blueprint of life?

By Tushar Chauhan

DNA is a hereditary unit that stores and transfers genetic material from one to another generation.

Image credit: Arek Socha from Pixabay

Here are the reasons why DNA is a blueprint of life.

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The structure of DNA is the same in all organisms on earth having sugar, phosphate and nitrogenous bases.


Universal DNA structure

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The triplet genetic code is the same in all organisms. For example, AUG for methionine.


Universal triplet genetic code

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All organisms have the same nitrogenous bases and nucleotide structure. Structural similarity gives function uniformity to DNA.


The structure of bases

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DNA is inherited from one generation to another and transfers genetic material and traits.


A unit of Inheritance

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In all organisms, replication, transcription and translation synthesize DNA, mRNA and protein, respectively.


Mechanism of protein synthesis

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DNA helps in growth, development and reproduction. Different combinations of genotypes produce different phenotypes.


Universal functionality

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DNA mutates (by intrinsic and extrinsic factors) and produces variability in nature. Mutations, sometimes, are harmful too.


Mutation and polymorphism

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Such unique and universal properties of DNA makes it a blueprint of life. 

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Image credit: Arek Socha from Pixabay