The process of random distribution and crossing over occur only in Meiosis I because homologous chromosomes pair together and genetic information can be exchanged. In this phase, the homologous chromosomes will then be split during Anaphase I. Where each chromosome moves is all random.
Meiosis II can be thought of as a Mitosis - like process. By this I mean that the sister chromatids are seperated along the metaphase plate. The genetic code in each sister chromatid will not cross-over, so there is no variation there. This will result in two genetically equivalent daughter cells, just like in Mitosis.
Because Meiosis II occurs twice, you will receive two haploid daughter cells with one set of genetic information, and another two haploid daughter cells with equivalent information.
