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2. HERE ARE TODAY’S CATEGORIES

3. Meiosis

4. Mendelian Genetics

5. Pedigrees

6. Non-Mendelian Genetics

7. Sex-Linked Traits

8. Non-Mendelian Genetics
Sex-Linked Traits
Meiosis
Pedigrees
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9. The type of cells that undergo Meiosis?

10. What are gametes?

11. The 8 phases of Meiosis?

12. What are Prophase I/II, Metaphase I/II, Anaphase I/II, and Telophase I/II?

13. A cell with a diploid number of 20 undergoes through complete Meiosis
A cell with a diploid number of 20 undergoes through complete Meiosis. How many chromosomes are in each daughter cell?

14. What is 10?

15. The steps of Metaphase I?

16. What are:
-Homologous chromosome pairs line up along equator.
-Spindle fibers from centrioles attach to one chromosome each.

17. Two benefits of increased genetic variation?

18. -Reduced incidence of inbreeding, which reduces inheritance of unfavorable traits.
-Greater number of advantageous traits within your gene pool.

19. The gametes that can be produced from an SSTt individual?

20. What are: ST, and St?

21. The genotypic frequencies of offspring from SsTt x sstt?

22. What are 25% SsTt, 25% Sstt, 25% ssTt, 25% sstt?

23. Suppose that long tails (L) were dominant to short tails (l) in grackle birds. A female short-tailed grackle mates with a male long-tailed grackle who had one parent with a long tail and one parent with a short tail. What are the offspring’s genotypic frequencies? 

24. What is 50% Ll and 50% ll?

25. Carrion beetles lay their eggs in dead animals and then bury them in the ground until they hatch. Assume that the preference for fresh meat (F) is dominant to the preference for rotted meat and that the tendency to bury the meat shallow (S) is dominant to the tendency to bury the meat deep. Suppose a female carrion beetle homozygous dominant for both traits mates with a male heterozygous for both traits. What will be the genotypes of the F1 generation?

26. What are SSFF, SSFf, SsFF, SsFf?

27. What are the parental genotypes?
In octopi, wrinkled ears are dominant (E) to smooth (e), and a curved beak is dominant (B) to a straight one (b). If a wrinkled, straight-beaked octopus is crossed with a wrinkled, curved-beaked octopus and their offspring are:
29 wrinkled straight
60 wrinkled curved
17 smooth curved
What are the parental genotypes?

28. What is Eebb x EeBb?

29. A pedigree depicting anemia, an autosomal recessive trait
A pedigree depicting anemia, an autosomal recessive trait. What are the genotypes of George and Ann? Use “A” for your alleles.

30. What is Aa?

31. The possible carriers for anemia?

32. Who are George, Sam, Ann, and Michael?

33. Rick has type A blood, and marries Rihanna who has type B blood
Rick has type A blood, and marries Rihanna who has type B blood. All 5 of their children have blood type AB. What are the most likely genotypes of Rick and Rihanna’s blood types?

34. What are AA and BB?

35. The pedigree below represents the incidence of the recessive Tay-Sachs disease in a family (aa). Fill in as many individuals’ genotypes as you can.

36. What are: aa, Aa aa, Aa, Aa, A_, aa, Aa, Aa, aa

37. What type of inheritance is this case of hemophilia?

38. Sex-Linked on the X Chromosome.

39. A long-haired dog is crossed with a short-haired dog to give all medium-haired offspring. What kind of genetic inheritance is this?

40. What is incomplete dominance?

41. Predict the phenotypic ratios of offspring when a homozygous black horse is crossed with a black and white checkered horse.

42. What are 50% black and 50% checkered offspring?

43. The difference between polygenic traits and multiple allele traits?

44. Polygenic: trait is controlled by more than one gene.
Multiple allele: gene for a trait has more than 2 types of alleles.

45. Suspects of a robbery have types A, B, and AB blood
Suspects of a robbery have types A, B, and AB blood. The blood at the crime scene have i alleles. Which suspects should be questioned?

46. Suspects with type A and B blood.

47. Consider the following hypothetical cases presented in the table
Consider the following hypothetical cases presented in the table. The blood type of the mother and child are given; indicate which blood genotype(s), if any, of the father would be prove that he is NOT the father.
Mother
Child
Father A O B AB

48. AA, BB, AB O
AB, AA, BB

49. The chromosome that most genes are located in?

50. X Chromosome

51. What kind of trait could a father never pass on to his daughter?

52. Sex-Linked on the Y Chromosome.

53. In humans, normal vision (XC) is dominant to colorblindness (Xc) and is sex-linked. A normal-visioned man, whose father was colorblind, marries a colorblind woman. What are the chances that his daughter will be colorblind?

54. What is 0%?

55. A female Drosophila of unknown genotype was crossed with a white-eyed male fly, of genotype   (w = white eye allele is recessive, w+= red-eye allele is dominant.) Half of the male and half of the female offspring were red-eyed, and half of the male and half of the female offspring were white-eyed. What was the genotype of the female fly?
A female Drosophila of unknown genotype was crossed with a white-eyed male fly, of genotype   (w = white eye allele is recessive, w+= red-eye allele is dominant.) Half of the male and half of the female offspring were red-eyed, and half of the male and half of the female offspring were white-eyed. What was the genotype of the female fly?
A female fly of unknown genotype was crossed with a white-eyed male fly. The white eye allele (Xw) is recessive to red eyed (XW). Half of the male and half of the female offspring were red-eyed, and half of the male and half of the female of the offspring were white eyed. What is the genotype of the female fly?

56. What is XWXw?

57. In cats, the gene for calico (multicolored) cats is codominant
In cats, the gene for calico (multicolored) cats is codominant. Females that receive a B and an O allele have black and orange splotches on white coats. Males can only be black or orange, but never calico. If a calico female is crossed with a black male, what percentage of the offspring will also be black AND male?

58. What is 25%?