Admin Table of Contents
What phase do chromatids move apart?
anaphase
Metaphase leads to anaphase, during which each chromosome’s sister chromatids separate and move to opposite poles of the cell.
What stage of meiosis does chromatids separate?
anaphase II
In metaphase II, the chromosomes line up individually along the metaphase plate. In anaphase II, the sister chromatids separate and are pulled towards opposite poles of the cell.
What is the stage of mitosis in which chromosomes uncoil and spindle fibers breakdown?
Telophase: spindle fibers breakdown, nuclear membrane forms, and chromosomes begin to uncoil and form chromatin.
When during the cell cycle are chromatids duplicated and why is this so important?
During the S phase, DNA is duplicated into two sister chromatids, and centrosomes, which give rise to the mitotic spindle, are also replicated. In the G2 phase, energy is replenished, new proteins are synthesized, the cytoskeleton is dismantled, and additional growth occurs.
Are there 92 chromosomes in interphase?
The genetic material of the cell is duplicated during S phase of interphase just as it was with mitosis resulting in 46 chromosomes and 92 chromatids during Prophase I and Metaphase I. However, these chromosomes are not arranged in the same way as they were during mitosis.
What moves the chromatids during mitosis answer key?
During metaphase, the sister chromatids align along the equator of the cell by attaching their centromeres to the spindle fibers. During anaphase, sister chromatids are separated at the centromere and are pulled towards opposite poles of the cell by the mitotic spindle.
What happens when two chromatids are placed at the opposite poles?
Chromosomes, each with one chromatid, arrive at opposite poles of the cell, and a new nuclear membrane forms around each of the two new daughter nuclei, which are identical to each other.
What happens to sister chromatids during metaphase 2?
During metaphase II, sister chromatids are condensed and aligned at the equator of the cell. During anaphase II sister chromatids are pulled apart by the kinetochore microtubules and move toward opposite poles.
How do chromosomes move through the cell membrane?
The movement of chromosomes is facilitated by a structure called the mitotic spindle, which consists of microtubules and associated proteins. Spindles extend from centrioles on each of the two sides (or poles) of the cell, attach to the chromosomes and align them, and pull the sister chromatids apart.
What happens to chromosomes during anaphase 2?
During anaphase II sister chromatids are pulled apart by the kinetochore microtubules and move toward opposite poles. During telophase II and cytokinesis, chromosomes arrive at opposite poles and begin to decondense; the two cells divide into four unique haploid cells.