NEETBotanyCell Cycle and Cell Division
How does the process in Anaphase II in meiosis lead to the movement of sister chromatids toward opposite poles?
Options
- ABy the reappearance of the nuclear envelope
- BBy cytokinesis
- CBy the shortening of microtubules attached to kinetochores
- DBy the splitting of chromosomes
Correct answer
C. By the shortening of microtubules attached to kinetochores
Step-by-step solution
In contrast to meiosis I, meiosis II resembles a normal mitosis. The nuclear membrane disappears by the end of prophase II (Figure 10.4). The chromosomes again become compact. Metaphase II: At this stage the chromosomes align at the equator and the microtubules from opposite poles of the spindle get attached to the kinetochores (Figure 10.4) of sister chromatids. It begins with the simultaneous splitting of the centromere of each chromosome (which was holding the sister chromatids together), allowing them to move t