Concept 4: Meiosis I: Prophase I. Chromosomes become visible, crossing-over occurs, the nucleolus disappears, the meiotic spindle forms, and the nuclear envelope disappears. To see prophase I animated, click the Play button. animation. Play ▷. Reset ↺. read more
Meiosis is a specialized and complicated type of cell division occurring in reproductive cells resulting in the formation of haploid gametes. The process of meiosis involves two complete cell divisions. The first is “reduction division” followed by “homeotypic division”. read more