Anaphase I begins when the two chromosomes of each bivalent (tetrad) separate and start moving toward opposite poles of the cell as a result of the action of the spindle. Notice that in anaphase I the sister chromatids remain attached at their centromeres and move together toward the poles.
What happens in meiosis during anaphase 1?
In anaphase I, the homologues are pulled apart and move apart to opposite ends of the cell. The sister chromatids of each chromosome, however, remain attached to one another and don’t come apart. Finally, in telophase I, the chromosomes arrive at opposite poles of the cell.
What happens during anaphase answers?
In anaphase, the sister chromatids separate from each other and are pulled towards opposite ends of the cell. The protein “glue” that holds the sister chromatids together is broken down, allowing them to separate. Each is now its own chromosome. The chromosomes of each pair are pulled towards opposite ends of the cell.
What does anaphase 2 look like?
During anaphase II, the third step of meiosis II, the sister chromatids of each chromosome separate and move toward opposite poles. … As the chromosomes are dragged along by the spindle apparatus, their arms can be seen dragging along behind so that the chromosomes form V-shapes.
What is the major event that occurs during anaphase?
During anaphase, each pair of chromosomes is separated into two identical, independent chromosomes. The chromosomes are separated by a structure called the mitotic spindle.
What is the significance of anaphase in this process?
What is the significance of anaphase in this process? 1) Anaphase usually ensures that each daughter cell has the same number of chromosomes as the parent cell. 2) Anaphase usually ensures that each daughter cell has twice as many chromosomes as the parent cell.
What happens during anaphase II?
During anaphase II, microtubules from each spindle attach to each sister chromatid at the kinetochore. The sister chromatids then separate, and the microtubules pull them to opposite poles of the cell. As in mitosis, each chromatid is now considered a separate chromosome (Figure 6).