Name the stage of cell cycle at which one of the following events occur?
(i) Chromosomes moves to spindle equator.
(ii) Centromere splits and chromatids separate.
(iii) Pairing between homologous chromosomes take place.
(iv) Crossing over between homologous chromosomes takes place.
(i) Metaphase (ii) Anaphase
(iii) Zygotene stage of meiosis-I (iv) Pachytene stage.