Individuals are born with mana, which accounts for their life force and has a hand in determining the strength of their spells. Mana level and composition is determined by a person's genes, which they inherit from a mix of their parents. There are three factors that decide magical power:
Maximum reserve: This describes the level of reserves that a person contains. Individuals with extremely high mana reserves represent the strongest of witches, and can access the most powerful spells in mage craft. However, they have more difficulty in controlling and directing the flow of their mana. As a result, their spells take longer to perform. They also have a slow recharge rate, lengthening the time period between spells.
Focus rate: This describes the level of control a person has over their mana flow. Individuals high in this category have small reserves of mana, and can be considered weaker than average. However, they have much more control, allowing them to be more precise and direct. While those with high reserves are battering rams, they are a scalpel. They also have slow recharge rates, leading to longer intervals between spells.
Recharge rate: This is the category that most people fall into. They have average reserves of mana, as well as typical levels of control over it. They have a higher rate of recovery, allowing them to recharge their mana quicker than the other categories.
Very rarely, a person is born with high stats in all three sections. These individuals have large power levels with excellent control over their mana, as well as quick recharge rates. These individuals are considered the diamond in the rough, and are the most powerful and formidable mages in the world. The way evolution works, successful mutations are supposed to be inherited by descendants, as they allowed the parent organism to better survive and thrive compared to others of their race. As offspring becoming more successful, they eventually supplant others of their kind and become dominant. In the case of these badass mages however, their superiority only lasts once a generation. Their traits that make them powerful are not passed down to their offspring. Families who have instances of these mages often try pairing them in order to create a line of powerful offspring, but these are never successful in creating the desired outcome.
Why would this be the case?