One of the biggest challenges for business organisations in the UK is learning how and where to trade overseas. In an interdependent world, international trade is an economic necessity. However, there are marked differences between trading in a national economy with known markets and known parameters, and trading on an international basis. Business organisations require support to enter markets as well as to sustain their activities.

39. During which phase of meiosis does the separation of identical chromatids occur? After the end of this process, what are the ploidies of the new cells?

40. How many cells are produced following meiosis I and meiosis II?

41. What are the stages of the first phase of meiosis?

42. During which phase of meiosis does the pairing of homologous chromosomes occur?

43. What is crossing over? During which phase of meiosis does this event occur?

44. What are the "chiasms" of homologous chromosomes found in prophase I?

45. Does interphase occur once again between meiosis I and meiosis II?

46. What are the stages of the second phase of meiosis?

47. What are the respective functions of the separation of homologous chromosomes and of the separation of identical chromatids during meiosis?

48. During which phase of meiosis does ploidy reduction occur? Does ploidy reduction occur in mitosis?