2. Types of mutations Sex-linked Genetics Genetic Disorders Blood typing Grab bag 1pt 1 pt 1 pt 1pt 1 pt 2 pt 2 pt 2pt 2pt 2 pt 3 pt 3 pt 3 pt 3 pt 3 pt 4 pt 4 pt 4pt 4 pt 4pt 5pt 5 pt 5 pt 5 pt 5 pt

3. All changes in genes are called _______.

4. mutations

5. The failure of chromosomes to separate properly is called ______.

6. nondisjunction

7. A mutation that occurs in the cells that produce the sex cells

8. Germ mutation

9. The type of mutation that occurs when a section of a chromosome reverses direction

10. inversion

11. When homologous chromosomes exchange part of their DNA

12. Crossing-over

13. The typical human female has what genotype?

14. XX

15. A male fruit fly has what genotype?

16. XY

17. The ratio of male fruit flies to females is about what?

18. 1:2or50%

19. Recessive sex-linked traits usually are seen in what group of people?

20. males

21. When is a recessive sex-linked trait seen in females?

22. When the female has that recessive trait on both X chromosomes.

23. Why is hemophilia more common in males?

24. It is sex-linked recessive and males only have one version of the gene

25. A female who is not colorblind, but has one of the recessive allele for colorblindness, is called a

26. carrier

27. A genetic disorder that usually shows no symptoms until ages thirty or forty is

28. Huntington’s Disease

29. A body cell of a person with Down syndrome has how many chromosomes?

30. 47

31. A trait that results in a disease where the blood cells are a curved shape when homozygous and a resistance to malaria when heterozygous.

32. Sickle Cell disease or sickle cell anemia

33. What are the 4 blood type groups?

34. ABABO

35. A person who has all the following antigens;A , B, Rh

36. AB+

37. A person who has none of the following antigens;A , B, Rh

38. O-

39. Rh is determined by several genes. What do we call this?

40. Polygenic

41. What type of inheritance is shown in blood group determination?

42. Codominance

43. The exception to the rule that every chromosome is part of a homologous pair are the ____.

44. Sex Chromosomes

45. A plant having a purple flower is crossed with a plant with a white flower to produce an offspring with a lavender flower is an example of

46. Incomplete dominance

47. Prenatal diagnosis of genetic disorders can occur by removing a small amount of fluid from the sac surrounding the embryo by

48. amniocentesis

49. A chromosomal abnormality that results in mental retardation and increased susceptibility to many diseases is ____________________ syndrome.

50. Down