Final answer:
In meiosis, chromosomes align during metaphase I and separate during anaphase I, while sister chromatids separate during anaphase II, resulting in four haploid gametes.
Step-by-step explanation:
During meiosis, chromosomes undergo several distinct behaviors according to the different phases of the process. The correct behavior that a chromosome will exhibit during the meiosis phases is option (a): chromosomes randomly align during metaphase I at the equator, and separation of homologous chromosomes occurs during anaphase I. Similarly, separation of sister chromatids occurs at anaphase II of meiosis II. At the end of meiosis II, four different gametic combinations are produced, each containing a haploid set of chromosomes.