NEETBotanyCell Cycle and Cell Division
What happens during Anaphase 1 of meiosis?
Options
- ABivalent chromosomes align on the equatorial plate.
- BHomologous chromosomes separate.
- CSister chromatids remain associated at their centromeres.
- DMicrotubules from the opposite poles of the spindle attach to the kinetochore of homologous chromosomes.
Correct answer
B. Homologous chromosomes separate.
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 The homologous chromosomes separate , while sister chromatids remain associated at their centromeres.