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Harry Potter and the not so simple world of genetics

Harry Potter and the not so simple world of genetics. Bell Work. Arthur is heterozygous for freckles and Molly is homozygous recessive. Make the cross and state the genotypes of the offspring and the phenotypes with percentages. Dihybrid Cross. Rules of Inheritance. Incomplete dominance.

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Harry Potter and the not so simple world of genetics

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  1. Harry Potter and the not so simple world of genetics

  2. Bell Work • Arthur is heterozygous for freckles and Molly is homozygous recessive. Make the cross and state the genotypes of the offspring and the phenotypes with percentages.

  3. Dihybrid Cross

  4. Rules of Inheritance

  5. Incomplete dominance • Incomplete dominance results in a phenotype that is a blend of a heterozygous allele pair. • Ex: Red flower x Blue flower = Purple flower • RR: Red Flower • BB: Blue Flower • RB: Purple Flower

  6. Non-Mendelian

  7. Incomplete dominance • Incomplete dominance results in a phenotype that is a blend of a heterozygous allele pair. • If the dragons in Harry Potter have the fire-power alleles F (strong fire) and F’ (no fire) that follow incomplete dominance, what are the phenotypes for the following dragon-fire genotypes? • FF : strong fire - F’F’: no fire • FF’: some fire

  8. Practice problems for incomplete dominance • If a Hungarian Horntail with strong fire, FF is mated with a Peruvian Vipertooth with no fire, what will the offspring have in terms of its fire power? • FF : Strong Fire • F’F’ : No fire • FF’ : Some fire

  9. Practice problems for incomplete dominance FF: Strong Fire F’F’: No Fire FF’: Some Fire • If a Hungarian Horntail (strong fire) is mated with a Peruvian Vipertooth (no fire) what will the offspring have in terms of its fire power?

  10. Practice problems for incomplete dominance • If a Niffler with long hair is mated with a Niffler with short hair, what will the offspring have for coat length? • HH : Long hair • H’H’ : Short hair • HH’ : Medium hair

  11. HH x H’H’ • HH: Long Hair • H’H’: Short Hair • HH’: Medium Hair

  12. Practice problems for incomplete dominance YY x BB • YY : Yellow Occamy • BB : Blue Occamy • YB : Green Occamy

  13. YY: Yellow Occamy • BB: Blue Occamy • YB: Green Occamy

  14. Cross a Snowy Owl with a Black Owl. What are the genotypes and phenotypes of the offspring?SS: White Owl BB: Black SB: Tawny

  15. SS: White Owl • BB: Black • SB: Tawny • Now mate the Tawny owls… what offspring do you expect?

  16. SB x SB • SS: White Owl • BB: Black • SB: Tawny

  17. Devils Snare • Devil’s Snare has Spikey thorns and No thorns, when mated they make medium thorns. Assign genotypes, and complete the crosses with genotype %. • Cross: • Spikey Thorns with No thorn • Spikey Thorns with Medium Thorns • Medium Thorns with No thorns • Medium Thorns with Medium Thorns

  18. Work the pattern You cross red flowers with white flower and all of the offspring are pink? Do the cross and identify the inheritance pattern? Mendelian or Incomplete? What are the phenotypes?

  19. Work the pattern You cross Green roses with White roses. 100% of the roses are Green? Do the cross and identify the inheritance pattern? Mendelian or Incomplete? What are the phenotypes?

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