What factors besides reproduction could affect the genotype and allele frequency of a population?

1. Question of the Day! What factors besides reproduction could affect the genotype and allele frequency of a population?

2. Cartoons of the Day! 117thEdition

3. Cartoons of the Day! 117thEdition

4. Cartoons of the Day! 117thEdition

5. Cartoons of the Day! 117thEdition

6. Cartoons of the Day! 117thEdition

7. Cartoons of the Day! 117thEdition

8. Problem #AW YEAH! • Three-fourths (3/4) of the plants produced by a cross between two unknown pea plants have axial flowers and ¼ have terminal flowers. What are the genotypes of the parent plants? • Parent genotypes:

9. Problem #10 • What cross would result in ½ of the offspring having green pods and ½ of the offspring having yellow pods? • Cross:

10. Always: • Homozygous dominant X anything = 100% dominant offspring • Heterozygote X homozygous recessive = 50% dominant 50% recessive • Heterozygote X heterozygote = 75% dominant 25% recessive • Homozygous recessive X homozygous recessive = 100% recessive B b B b b b B B ? B? B? b Bb bb B BB Bb b bb bb ? B? B? b Bb bb Bb bb b bb bb b

11. Question of the Day! • Analyze the data in at your table and draw 3 conclusions about the following: • 1.) What factors are affecting the genotype frequencies? • 2.) What factors are affecting the allele frequencies? • 3.) If we were to mate 2 more rounds using the offspring from round 4 to start, predict the distribution of alleles. Support your prediction with the data.

12. INTRODUCING….DRUM ROLL!!! DIHYBRID CROSSES!!!

13. Cartoon of the Day! • Clay’s clips of the day!

14. Cartoon of the Day!

15. Cartoon of the Day!

16. Try this one on your own! • In the deep rainforests of Brazil lives the Ocamazi tribe, amongst the members of this tribe exists a dominant trait for webbed feet (A), most have this trait, those that don’t have non-webbed feet (a). Additionally most members of this tribe webbed hands(B), a small minority have normal non-webbed fingers (b). Needless to say this tribe is great at swimming. • Problem: An Ocamazi princess Heterozygous for both webbed feet and fingers travels to another tribe to meet her soon to be husband, his tribe also has webbed feet which is also heterozygous for but no webbed hands which he is homozygous for. Draw the cross for the mating of these two people.

17. Solution • Princess: FfWw Husband: Ffww Fw fw Fw fw Interpret this data! FW FFWw FFWw FfWw FfWw FFww Ffww Fw FFww Ffww ffWw ffWw fW FfWw FfWw fw Ffww ffww ffww Ffww F-Webbed Feet, f-Non Webbed FeetW- Webbed hands, w-Non Webbed hands

18. Challenge Problem • You are a world-famous breeder of Purple-People Eaters.  Tragically, your entire stock perishes in a fire except for two individuals.  They are both heterozygous for all three traits desired.  The three traits are as follows: Traits • EE or Ee=Two eyes        ee= One eye • HHor Hh= Two horns   hh= One horn • FF or Ff= Non-flying ff= Flying

19. Powerpoint Quiz 1 • 1.) What did Mendel contribute to the field of Genetics? • 2.) Explain the difference between phenotype and genotype. • 3.)Give an example of an ‘allele.’ • 4.)Give an example of a recessive allele Mendel discovered in the pea plants. • 5.) What does it mean to be ‘Heterozygous’ for a given trait?

20. Punnet Square • Created by Punnet • Used to predict possible outcomes of crosses

21. Problem #1 (together) • Nn x NN • Genotype ratio: • Phenotype ratio:

22. Problem #2 • Aa x aa • Genotype ratio: • Phenotype ratio:

23. Problem #3 (on your own) • Tt x Tt • Genotype ratio: • Phenotype ratio:

24. Problem #4 • Cross two plants that are heterozygous for green pods • Genotype ratio: • Phenotype ratio:

25. Mr. Nichols PHHS Punnett Genetics

26. Powerpoint Quiz 1 • 1.) What did Mendel contribute to the field of Genetics? • 2.) Explain the difference between phenotype and genotype. • 3.)Give an example of an ‘allele.’ • 4.)Give an example of a recessive allele Mendel discovered in the pea plants. • 5.) What does it mean to be ‘Heterozygous’ for a given trait?

27. Punnet Square • Created by Punnet • Used to predict possible outcomes of crosses

28. Problem #1 (together) • Nn x NN • Genotype ratio: • Phenotype ratio:

29. Problem #2 • Aa x aa • Genotype ratio: • Phenotype ratio:

30. Problem #3 (on your own) • Tt x Tt • Genotype ratio: • Phenotype ratio:

31. Problem #4 • Cross two plants that are heterozygous for green pods • Genotype ratio: • Phenotype ratio:

32. Friendly Competition • The first student to write all of the different options for Punnett squares gets 10 bio bucks!

33. Cartoons of the Day

34. Cartoons of the Day

35. Cartoons of the Day

36. Cartoons of the Day

37. Cartoons of the Day

38. Cartoon of the Day!

39. Problem #5 • Cross a plant that is heterozygous for axial flowers with a plant that has terminal flowers. • Genotype ratio: • Phenotype ratio:

40. Problem #6 • Cross a homozygous tall plant with a short plant. • Genotype ratio: • Phenotype ratio:

41. Problem #7 • Cross a plant that is heterozygous for smooth pods with a plant that had constricted pods. • Genotype ratio: • Phenotype ratio:

42. Problem #8 • When a tall plant is crossed with a short plant, some of the offspring are short. What are the genotypes of the parents and the offspring? What is the phenotypic ratio in the offspring? • Parent genotypes: • Offspring genotypes: • Phenotypic ratio:

43. WELCOME BACK!!! “PREPARE THY SELVES FOR MORTAL COMBAT……INVOLVING BIO BUCKS AND CAPITAL LETTERS, AHHHHHHH!!!!” -Mr. Nichols A.K.A: Get some paper and a pencil ready.

44. Mr. Nichols PHHS Punnett Genetics