NEETBotanyCell Cycle and Cell Division
What is the role of sister chromatids in Anaphase 1 of meiosis?
Options
- ATo separate homologous chromosomes
- BTo align the bivalent chromosomes on the equatorial plate
- CTo allow microtubules from the opposite poles of the spindle to attach to the kinetochore of homologous chromo
- DTo remain associated at their centromeres
Correct answer
D. To remain associated at their centromeres
Step-by-step solution
The final stage of meiotic prophase I is diakinesis. This is marked by terminalisation of chiasmata. : During this phase the chromosomes are fully condensed and the meiotic spindle is assembled to prepare the homologous chromosomes for separation. By the end of diakinesis, the nucleolus disappears and the nuclear envelope also breaks down. Diakinesis represents transition to metaphase Metaphase I: The bivalent chromosomes align on the equatorial plate The microtubules from the opposite poles of the spindle attach t