The easiest way to think of the fairies’ magic and magical heritage would be to compare it to the basic reproduction and XY s*x-determination system. I think they cover this in basic 8th-grade biology (at least that’s when I learned it).
(https://en.wikipedia.org/wiki/XY_s*x-determination_system ⇐ Should be somewhat helpful if you are unfamiliar with it.)
According to the XY s*x-determination system, females have two XX chromosomes and males have one X and one Y chromosome. These two chromosomes have basic markers that decide what genitalia an embryo develops and eventually gets categorized as either a male or a female.
In the context of this book;
The Fairies cannot actually create magic but have the capacity to process the magic in the air into spells or to grant wishes. In the other
