What makes up DNA?

DNA is what makes us who we are, coding for the way we look as well as certain traits such as genetic conditions. However, what is DNA?‍

DNA is the abbreviation for deoxyribonucleic acid and consists of two polynucleotide chains that are linked together to form a double helix structure.

While nitrogenous nucleotides form the internal structure of DNA, the helix is held together in the ladder formation by two backbones of a sugar phosphate backbone.

What are nucleotides?

Nucleotides are essential biomolecules that form all living organisms; it is these nucleotides that form DNA.

DNA is made up of four nucleotides A: Adenine, C: Cytosine, G: Guanine and T: Thymine.

To forma strand of DNA, these nucleotides must work in pairs. A will only pair with T, and C will only pair with G, with these pairs linking together in a collection of pairs to form parts of our DNA to create different genes.

It is these sequences that determine the expression of different gene traits.

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