Harry Potter  and the   Recessive Allele How Are Wizards Made ?
How Are Wizards Made ? <ul><li>Being a wizard or a muggle is all decided by genetics </li></ul><ul><li>All humans includin...
How Are Wizards Made ? <ul><li>The allele for wizarding ability is m </li></ul><ul><li>Wizards have the alleles mm </li></ul>
How Are Wizards Made ? <ul><li>The allele for muggleness is M </li></ul><ul><li>Muggles have the alleles Mm or MM </li></u...
The Malfoys Lucius Malfoy  ( mm ) Narcissa Malfoy  ( mm ) Draco Malfoy (  ) The Malfoys are a ‘pure blood’ family All thei...
Lily Potter  ( mm ) James Potter  ( mm ) Harry Potter  ( WW ) Both Harry’s parents had magical ability so they must both h...
The Weasleys are pure blood wizards so they all have the alleles mm
Hermione is a powerful witch so she must be mm Both her parents are muggles so they must be Mm so they can give her a m al...
Tom Riddle is a ‘half blood’.  His mother was a witch  ( mm )  and his father was a muggle His father must have had the al...
Filch is a ‘squib’ Both his parents are mm so he should be too because he can’t get an M allele from either parent but he ...
What wizarding alleles would Ron and Hermione’s children have ? Ron  (mm) Hermione (mm) Children (  ) m m
Their children could only get the m allele from both parents so they would all be wizards m m m m m m m m m m Hermione m m...
What wizarding alleles would Ginny and Dudley’s children have ? If Dudley is Mm Ginny mm Dudley Mm Children WW  or  mM m M...
Half of their children would be likely to get the m allele from both parents so they would be wizards The other half would...
What wizarding alleles would Ginny and Dudley’s children have ? If Dudley is MM Ginny mm Dudley MM Children WM m M
Their children would get the m allele from Ginny and the M allele from Dudley so they would all be muggles m M m M m M m M...
What wizarding alleles would you  expect Hermione’s  brothers and sisters to have ?
The Granger’s children have a one in four chance of getting m alleles from both parents and having magical ability They al...
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Harry Potter And The Alle

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Harry Potter And The Alle

  1. 1. Harry Potter and the Recessive Allele How Are Wizards Made ?
  2. 2. How Are Wizards Made ? <ul><li>Being a wizard or a muggle is all decided by genetics </li></ul><ul><li>All humans including wizards receive one allele from each parent </li></ul>
  3. 3. How Are Wizards Made ? <ul><li>The allele for wizarding ability is m </li></ul><ul><li>Wizards have the alleles mm </li></ul>
  4. 4. How Are Wizards Made ? <ul><li>The allele for muggleness is M </li></ul><ul><li>Muggles have the alleles Mm or MM </li></ul><ul><li>M is dominant to m so you can only be a wizard if you have no M allele </li></ul>
  5. 5. The Malfoys Lucius Malfoy ( mm ) Narcissa Malfoy ( mm ) Draco Malfoy ( ) The Malfoys are a ‘pure blood’ family All their ancestors are wizards so they must have the alleles mm m m
  6. 6. Lily Potter ( mm ) James Potter ( mm ) Harry Potter ( WW ) Both Harry’s parents had magical ability so they must both have been mm They passed these alleles on to Harry The Potters m m
  7. 7. The Weasleys are pure blood wizards so they all have the alleles mm
  8. 8. Hermione is a powerful witch so she must be mm Both her parents are muggles so they must be Mm so they can give her a m allele each Mm Mm mm
  9. 9. Tom Riddle is a ‘half blood’. His mother was a witch ( mm ) and his father was a muggle His father must have had the alleles Mm so he could give him the other m allele mm Mm mm
  10. 10. Filch is a ‘squib’ Both his parents are mm so he should be too because he can’t get an M 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 isn’t really and his mother had an affair with a muggle !
  11. 11. What wizarding alleles would Ron and Hermione’s children have ? Ron (mm) Hermione (mm) Children ( ) m m
  12. 12. Their children could only get the m allele from both parents so they would all be wizards m m m m m m m m m m Hermione m m Ron
  13. 13. What wizarding alleles would Ginny and Dudley’s children have ? If Dudley is Mm Ginny mm Dudley Mm Children WW or mM m M m m
  14. 14. Half of their children would be likely to get the m 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 m m m m m M m M m m Ginny M m Dudley
  15. 15. What wizarding alleles would Ginny and Dudley’s children have ? If Dudley is MM Ginny mm Dudley MM Children WM m M
  16. 16. Their children would get the m allele from Ginny and the M allele from Dudley so they would all be muggles m M m M m M m M WM WM m WM WM m Ginny M M Dudley
  17. 17. What wizarding alleles would you expect Hermione’s brothers and sisters to have ?
  18. 18. The Granger’s children have a one in four chance of getting m alleles from both parents and having magical ability They also have a one in four chance of getting M alleles from both parents and being a muggle They could also get only one m from their mother or father and still be a muggle m M m M m m M M MM WM M WM WW m Mrs Granger M m Mr Granger
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