dnd 5e – Are the traits of the draconic bloodline inherited or cultivated and developed and evolved?

I realize that this could depend on my DM, and in some cases it could be operative, but like in my Vicious Mockery publication, I realize that this could be a case in which I misinterpret what I read.

The Sorcerer is defined as:

Raw magic: Magic is part of every sorcerer.
Body, mind and spirit with a latent power that hopes to be
beaten
[. . . ] The appearance of sorcerer powers is wildly.
unpredictable Some draconic blood lines produce exactly one sorcerer.
in each generation,
But in other lines of descent each individual.
he is a sorcerer [. . . ]Some sorcerers can not name the origin of their power, while others track him to strange events in their own lives. [. . .]

Draconic blood line: Your innate magic comes from draconic
The magic that mixed with your blood or that of your ancestors.

Most of the time, sorcerers with this origin trace their descent to a
mighty sorcerer of ancient times who made a deal with a dragon or
that could even have claimed a dragon father. Some of these
the bloodlines are well established in the world,
but most are dark.
Any given warlock could be the first of a new bloodline, as a result
of a pact or some other exceptional circumstance.

Like the infernal ancestry of a Tiefling, Dragonborn's Dragonborn ancestry, the inherited trait of the sorcerer of the Draconic bloodline sounds more like something you are born with than something you develop. Although I understand that this is a mere potential that needs to be perfected to make it effective, some of the features listed sound more like physical bonuses than magical properties:

  • Draconic resilience: As magic flows through your body, it gives rise to physical traits of your dragon ancestors. On 1st level,
    […]In addition, parts of your skin are covered by a fine sheen of
    Dragon scales. When you are not wearing armor, your CA equals 13+ your Dexterity modifier.
  • Dragon wings: At level 14, you gain the ability to sprout a pair of dragon wings from your back, gaining a flight speed equal to
    your current speed You can Create these wings as extra action in
    your turn.
    They last until you discard them as a bonus action on your turn.

Since these features are not manifested using sorcerer's points but are more like physical changes (wings created at will), I can not help but wonder what would happen if this kind of talented spellcaster chose another path from the beginning. Since the adventurers start at level one and Draconic resistance states that at level 1, "parts of your skin are covered by a glitter of dragon scales "and not"become covered "would that happen regardless of whether the character decides to follow this path or become a barbarian instead? Or would the scales with which he was born simply fall?