How Are Wizards Made How Are Wizards Made Being a wizard or a muggle is all decided by genetics All humans including wizards receive one allele from each parent How Are ID: 686332
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Slide1
Harry Potter
and the Recessive Allele
How Are Wizards Made?Slide2
How Are Wizards
Made?Being a wizard or a muggle is all decided by genetics
All humans including wizards receive one allele from
each parentSlide3
How Are Wizards
Made?Wizards have the alleles
( w w)The allele for wizarding ability is: wSlide4
How Are Wizards
Made?The allele for Muggleness is
WMuggles
have the
alleles
Ww
or
WW
Ww
– heterozygous dominant
WW – homozygous dominant
W is dominant to w so you can only be a wizard if you have no W alleleSlide5
The
Malfoys
Lucius
Malfoy
(
w w
)
Narcissa
Malfoy
(
w w
)Draco Malfoy
The
Malfoys
are a ‘pure blood
’
family
All their ancestors are wizards so
they
must
have the alleles (w w)
W
(w w )Slide6
Lily Potter
(
w w )
James
Potter
(
w w
)
Harry Potter
(
WW
)
Both Harry’s parents
had
magical
ability so
they
must
both have been w
w
They passed these alleles on to Harry
The Potters
w wSlide7
The Weasleys are pure blood wizards so they
all have the alleles ( w w )Slide8
Hermione
is a powerful witch so she must be w w
Both her parents are
muggles
so they
must
be
Ww
so they can give her a (w) allele each
Ww
Ww
w wSlide9
Tom
Riddle is a ‘half blood’. His mother was a witch (
w w) and his father was a muggleHis father
must
have had the alleles
Ww
so he could give
him
the other w allele
w w
Ww
w wSlide10
Filch is a ‘squib’
Both his parents are w w so he should be too because he can’t get an W allele from
either parent but he can’t do any magic
This
means
he has
a
mutation
so his
wizarding
powers don’t
work or
the man he thinks is his father is not truly his father. His natural father must be a muggle!Slide11Slide12
What
wizarding alleles would Ron and Hermione’s
children have?
Ron (w w)
Hermione
(w w)
Children
( w
)
wSlide13
Ron
w
w
Hermione
w
w w
w
Their children could only get the
w
allele
from
both parents so they would all be wizards
w
w
w
w
w
wSlide14
What
wizarding alleles would Ginny and Dudley’s children have If Dudley is Ww?
Ginny
Dudley
W
w
w w
Ww
or
wwSlide15
Dudley
w
W
Ginny
w
w
Half of their children would be likely to get the w allele
from
both parents so they would be wizards
The other half would be likely to get an
M
allele
from
Dudley and would be
muggles
w
w
w
w
W
w
W
wSlide16
Dudley
W
W
Ginny
w
WM
WM
w
WM
WM
Their children would get the w allele
from
Ginny and the
W
allele
from
Dudley so they would all be
muggles
W
w
W
w
W
w
W
wSlide17
What
wizarding alleles would you expect Hermione’s brothers and sisters to have? Slide18
Mr
Granger
w
W
Mrs
Granger
w
WW
WM
W
WM
MM
The Granger’s children have a one in four chance of getting w alleles
from
both parents and having
magical
ability
They also have a one in four chance of getting
W
alleles
from
both parents and being a
muggle
They could also
get only one
w
from
their
mother
or father
and still be a
muggle
W
w
W
w
w
w
W
WSlide19
The
End