"Pure-blood" is the term applied to wizards and witches who have no Muggle blood, Muggle-borns, or half-bloods at all in their family trees. They are the rarest of the three blood statuses, with J.K. Rowling stating that ten per cent of the wizarding community is made up of pure-bloods.
What is blood status in Harry Potter? Blood status is a concept in wizarding world that distinguishes between family trees that have different levels of magically endowed members. Many pure bloods consider themselves apart and superior to half bloods and muggle borns. List of the pure blood families.
It is not impossible if a muggleborn witch/wizard have the traits and values of Sytherin, and Slytherin doesn't mean they only accept purebloods but also halfbloods and that halfbloods are really talented and great like Snape he is a potion master and Umbridge also she was a Slytherin.
Pure-bloods refer to families or individuals with no known linkages with Muggles (non-magic humans). In contrast, half-bloods are witches and wizards whose ancestry is split between magical and non-magical humans. On the other hand, Muggle-borns are witches and wizards born out of two Muggle parents.
The REAL Reason the Weasleys Are So POOR (They're CURSED) - Harry Potter Theory
How do you know if you are pureblood?
Purebloods are people who (mainly) have no Muggles in their family. They like to keep the generations "pure" by breeding with other purebloods. Purebloods are generally the ones who use the term "Mudblood", a term considered derogatory by the wizarding world.
Draco Lucius Malfoy (b. 5 June 1980) was a British pure-blood wizard and the only son of Lucius and Narcissa Malfoy (née Black). The son of a Death Eater, Draco was raised to strongly believe in the importance of blood purity. He looked down on half-bloods and Muggle-borns.
By the 1990s, most of the magical population were half-bloods. The children of Harry and Ginny Potter were considered half-bloods because although Ginny was pure-blood, Harry's mother was Muggle-born.
Muggle-born Slytherins existed, but were very rare, as noted insultingly by Scabior the Snatcher. There had also been definite examples of half-bloods sorted into the house, including Tom Riddle, Dolores Umbridge, and Severus Snape.
Despite being a pure-blood, he didn't believe that he was superior to other witches, wizards and Muggles. He had a lot going for him and his well-placed morals were even more impressive if you think about the start that he had in life. Sirius came from a family of pure-blood fanatics.
It has nothing to do with genes and is just a construct of wizarding society. So the magical child of two muggle-born would be half-blood and a non-magical chld of two muggle-born a squib.
Neville is a pure-blood wizard born to Frank and Alice Longbottom, who were prominent Aurors and also members of the Order of the Phoenix during the first war against Lord Voldemort.
It makes sense that the Weasleys were a pureblood family, what is interesting is that they are still a pure-blood family by the time Harry meets them. They've been blood traitors and fought in the First Wizarding War and yet, despite marriages across the family, they still hold their "pure blood" status.
As such, he did not view half-blood witches and wizards differently from pure-bloods from a blood purity point of view, even if he considered them less respectable than pure-bloods, and thus Slytherin House let wizards such as Severus Snape and Tom Riddle into its ranks.
Those who believed in the importance of blood purity considered half-bloods to be inferior because of their Muggle heritage, though superior to Muggle-borns. It could be argued that half-bloods in the eyes of those who believed in blood purity bridged the gap between "respectable" and inferior.
Pure-blood elitism. The most extreme of the pure-blood supremacists sought to purge the world of those they consider "impure". They often tolerated half-bloods out of necessity (though still disdained them), but Muggle-borns were persecuted and Muggles were viewed as nothing more than animals.
However, like in the real world, some magical members of certain families or groups have biases toward those who do not conform to a "pure-blood" status, such as being Muggle-born, a Squib or, in the case of Rubeus Hagrid, a half-breed. This prejudice may have affected the Hagrid family in a myriad of ways, but Mr.
Draco was extremely reluctant to identify any of them, he told the other Death Eaters present that he could not be sure that it was Harry. He did this despite Ron and Hermione's identities, at least, being obvious.
They decided that they needed to see what I looked like with white hair. It meant the first of many bleaching that would become a staple in my life for the next ten years. It took longer than expected to establish my first Malfoy hairdo. You can't just go from one color to another, especially when going lighter.
J.K. Rowling says Draco doesn't have a patronus because he never learned the spell but I think it's because he doesn't have any powerful happy memories to use.
