Describe4 marksStandard
A student prepared slides of cells from a grasshopper testis and observed four distinct stages of meiosis. The student's notes are shown below:
- Cell X: Homologous chromosomes are aligned in pairs on the equatorial plate; spindle fibers are attached to the centromeres.
- Cell Y: Chromosomes are being pulled to opposite poles; each chromosome still consists of two sister chromatids.
- Cell Z: The nuclear envelope is reforming around two groups of chromosomes; the spindle is disassembling.
- Cell W: Individual chromosomes (each with two sister chromatids) are aligned along the equator; spindle fibers attach to both sides of each centromere.
Describe the stages of meiosis these cells represent, in the correct chronological order. For each stage, describe one additional visible event that is occurring.