A ‘chosen one’ story stars a main character who is basically ordinary, but because of their bloodline, they are destined for great things. Harry Potter is the iconic example of a contemporary chosen one story. Harry Potter comes after a long tradition.
At TV Tropes you’ll find that Chosen One stories are so popular there are various subcategories.
WHAT DOES SCIENCE SAY ABOUT THE IMPORTANCE OF BLOODLINE?
When we talk about blood we’re of course talking about genetics. We didn’t know this until recently, though scientists had a sense there was some kind of particle which passed traits on.
The 20th century gave us the ‘nature versus nurture’ debate, but anyone who still thinks in those terms is making a folk distinction. Scientists working in genetics today don’t think in those terms at all because, basically, it’s all circular. We now know that environment influences gene expression. Now we know how little we actually know about genes. Sean Carroll describes our early thinking on DNA, once we had a name for it, then goes on to describe how much more complicated it is than that:
If you knew what the DNA was you could predict exactly what the organism was going to be, maybe what kind of food they would like or what kind of occupation they would have later in life. Today we know it’s a little bit more complicated than that. There’s more going on than just our DNA to make up who we are, not only nature versus nurture but even the nature part is very complicated. There’s epigenetics and development factors. There’s mitochondrial DNA. There’s the expression of the different parts of the genes that we have, and so we’re in a very, very rapid state of evolution, as it were, in terms of how we think in terms of how heredity works.
Separately, I heard another geneticist talking in an interview. I don’t remember who it was or what they were talking about exactly, but one thing stuck in my mind: Geneticists, as a group, don’t tend to be all that interested in ancestry. You won’t find geneticists avidly researching their own family trees. They don’t hang out on the forums of Ancestry.com. That’s a separate interest altogether. Conversely, an interest in genetics seems to make you less interested in where you personally came from, partly because your greater understanding of genetics shows you that we’re all related in one giant web. It seems the story of our collective DNA is far more interesting than any individual’s bloodline.
Maybe we should all get PhDs in genetics and we’ll get some world peace?
FEATURES OF A CHOSEN ONE STORY
The bloodline plot often involves an orphaned character. (Or a character who thinks they are orphaned.) Orphans are super popular in children’s literature, especially in American children’s literature.
Especially in kids’ literature … there’s a trend towards unhappily adopted orphan heroes, as we’ll all know, who are lifted from the abuse/poverty/hilariously wonky living conditions they’re in by discovering that their parents were secretly wizards, or royalty, or holders of some great destiny that Our Hero is now tasked to take up. The truth of their bloodline saves the day, and you can dream of a giant busting through your door declaring “Yer a wizard” and scooping you off into the adventure you were destined for, away from your mundane and terrible home life.