I am seeking additional supporting canon evidence for the idea that within the Potterverse, it would be potentially possible to use magic to genetically engineer/enhance witches/wizards to have superior magical ability. Related to that is the question/idea. What same evidence might support the idea that muggles could eventually learn to use genetic engineering to introduce 'magic genes" into the mugggle gene pool, thus making magic accessible to the general population? If members prefer I can break this into two separate stack questions.
Evidence I believe which already support either/both of these scenarios include:
Magical abilities appear to be genetically inherited
- We see numerous references to families in which magic appears pretty much to appear every generation.
- The term "pureblood" is used to denote where such abilities are almost guaranteed.
- Within wizarding families Only rare recessives (a.k.a. squibs) appear to not inherit such abilities.
J.K. Rowling: "Muggle-borns will have a witch or wizard somewhere on their family tree, in some cases many, many generations back. The gene resurfaces in some unexpected places." Harry Potter Wikia
Magical abilities appear to increase as individuals grow, mature and develop them (similar to inherited physical traits such as height/musculature)
"The Goblet of Fire" - page 217: Mad-Eye Moody "Avada Kedavra's a curse that needs a powerful bit of magic behind it -- you could all get your wands out now and point them at me and say the words, and I doubt I'd get as much as a nosebleed."
We have seen the ability for cross-species types of transformation.:
- Use of polyjuice potion with a cat hair made Hermione a mix of feline and human.
- Transfiguration is commonplace
- It is possible that even just temporarily these types of efforts extended down the genetic level in some way beyond just the surface appearance. If so, this would make such activities similar to muggle experiments in genetic splicing using cross-species genes. Too, that if there is a temporary genetic component, it could possibly be made more permanent and/or even inheritable.
Dedicated practitioners willing to commit the use of their own children
- Draco's father was proud to raise his son to become a Death Eater. It is certainly in the realm of possibility that such parents would consent to efforts to genetically enhance their child's magical ability for a cause.
I also welcome counter-arguments/evidence why it would NOT be possible to do this.