Being over 99.99% empty space[citation required] (as with all of physical existence), and composed of star dust over 4.6 billion years old (forged in the heart of a dying star), the culmination of what constitutes any person is roughly (by mass):
- 65% Oxygen
- 9.5% Hydrogen
- 19% Carbon
- 3% Nitrogen
- 1.5% Calcium
- 1% Phosphorous
- along with a handful of other trace elements
Of these elements, on average 1.46 MeV of radition originates from within the human body by naturally occuring radioactive isotopes. The primary source of this radioactivity being an isotopse of Potasium (K-40) with a half-life of 1.26 billion years, the second most abundant source of radiation being Carbon-14 (produced continuously in the atmosphere when a high energy neutron strikes atmospheric Nitrogen. C-14 oddly enough eventually decays back into Nitrogen), with a half-life of 5,730 years.
With a genome consisting of ~3.23 billion randomly arranged base pairs, across 23 pairs of chromosomes (which makes up [0.0007%, 0.0009%] of total body mass[citation required]), 99.9% of the human genome (excluding mitocondrial DNA) is shared by everyone[citation required], of which 5-8% is also composed of endogenous retroviruses.
ERVs are technically foreign gene sequences which have parasitised a host genome (and are generally considered inactive) as the result of being transcripted after exposure to specific viral agents within geographically isolated regions. As a result, ERVs can be used as markers in the human genome to trace the geographical distribution of people throughout history, all the way back to humanity's shared origin in the heart of sub-saharan Africa and beyond.
Effectively, those individual mutations which make a person's DNA 'unique' are statistically insignificant[citation required].
Beginning with the fusion event forging human chromosome 2 (birthing modern Homo Sapiens), this distinct divergence from our 24 chromosome pair hominid relatives allowed our ancestors to stand tall above their competition, to gaze towards the stars and the future.
Since then on, from a genetic standpoint for all practical purposes, every human has been statistically physically the same, dispite minor variations in physical appearance, ancestory, culture or personal experiences.
These objective facts merely concern our similarities regarding our shared physical reality and do not even begin to touch on the metaphysical aspects of being a sentient organic lifeform.
It's important to never forget, we share vastly more in common with each other than that which makes us different but it is also important that we should always celebrate and respect those insignificant differences that make us unique because variety is what makes life exciting!
We are all in this together.
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