The combination of A C G T

A molecule in a fusion

blood veins, arteries, glucose and particles

I am a result of a chemical reaction

The product of a simple attraction

Born into a unit that was nuclear

One man, one woman, one fifth of a fraction

A cocoa explosion, chocolate, coated cutaneous

I am a contained yet spontaneous anatomy

Physically speaking, I am normality

All one, I have my allosome

yet the x’s asking the y’s…

…who am I?