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  1. Question: Who determines sex of the baby?

  2. King Henry VIII & his six wives • 1509 - 1547 • Born: 28 June 1491 • - Greenwich PalaceFather: King Henry VIIMother: Elizabeth of YorkReigned: 1509 - 1547Died: 28 January 1547

  3. King Henry VIII

  4. The wives of King Henry VIII • Catherine of Aragon - divorced • Anne Boleyn - beheaded • Jane Seymour - died • Anne of Cleaves - divorced • Catherine Howard - beheaded • Catherine Parr - survived

  5. 1) Catherine • of Aragon • - divorced

  6. The wives of King Henry VIII 2) Anne Boleyn - beheaded

  7. 2) Anne Boleyn - beheaded

  8. The wives of King Henry VIII 3) Jane Seymour - died

  9. The wives of King Henry VIII 4) Anne of Cleaves - divorced

  10. 5) Catherine Howard - beheaded

  11. Catherine Parr - survived

  12. Moral:

  13. Moral: Don’t anger the King.

  14. Moral: Don’t anger the King. Sex is determined by males!

  15. How many chromosomes are in a human nucleus?

  16. 46 Chromosomesin every body cell

  17. 44 Chromosomesare autosomal

  18. 2 chromosomes are sex

  19. Sex Chromosomes Male = XY Female = XX

  20. X X

  21. X X gene A a gene Q q f gene F

  22. XX XY marries

  23. XX XY marries X

  24. XX XY marries X

  25. XX XY marries X Y X

  26. XX XY marries X Y X Girl Boy

  27. In DNA, what matches with “A”?

  28. In DNA, what matches with “G”?

  29. DNA

  30. 3 billion base pairs in a body cell

  31. Chromosome Allele 2 Allele 1

  32. Color Blindnessis a sex-linked recessive conditionSex-linked = X-linked!

  33. Males XN Y =Normal Xn Y =affected

  34. Females XN XN =Normal XN Xn =Carrier Xn Xn =affected

  35. Ishihara Test for Color Blindness:

  36. Normal color vision should have seen a “5”. Red/green color blindness should have seen a “2”.

  37. Hardy-Rand-Rittler TestTry to find a circle, square, star and/or boat in the next couple of pictures.

  38. Normal vision should see the yellow and “faint” brown objects. Color Blind people should only see the yellow objects.

  39. Hemophilia = recessive and X-linked