In Anaphase I of meiosis.
Homologous chromosomes segregate towards opposite poles of a dividing cell during the anaphase stage of mitosis.
That would be anaphase I of meiosis. We know the question is concerning meiosis and not mitosis because it involves homologous chromosomes. Anaphase I begins when the kinetochore fibers stemming from the centrioles "grab" the centromeres of homologous chromosomes and "pull" them towards opposite ends of the cell.The mechanisms are a little more complicated than "grabbing" and "pulling," but for this question the mechanisms are of little importance.
Yes, anaphase is a stage of nuclear division in both mitosis and meiosis. In anaphase, sister chromatids (or homologous chromosomes in meiosis) are pulled apart towards opposite ends of the cell by the spindle fibers. This ensures that each daughter cell receives the correct number of chromosomes.
During anaphase, the centrosomes (which have moved to opposite poles of the cell) release microtubules from their centrioles which then pull the chromosomes towards them, the double stranded chromosomes then split at the centromere and thus each pole of the chromosome has a copy of every chromosome. I assume you're talking about meiotic division though and in this case the spindle fibres/ microtubules dont split the chromosomes in half, rather, the chromosomes line up in homologous pairs (instead of in single file) and the spindle fibres pull one of the entire homologous double stranded chromosomes to its designated pole.
In mitotic anaphase, sister chromatids separate and move towards opposite poles of the cell, resulting in genetically identical daughter cells. In meiotic anaphase II, homologous chromosomes have already separated in meiosis I, so sister chromatids now separate and move towards opposite poles, resulting in haploid daughter cells with genetic variation.
Homologous chromosomes segregate towards opposite poles of a dividing cell during the anaphase stage of mitosis.
Anaphase I, and then again in Anaphase II--two seperations occur in meiosis.
That would be anaphase I of meiosis. We know the question is concerning meiosis and not mitosis because it involves homologous chromosomes. Anaphase I begins when the kinetochore fibers stemming from the centrioles "grab" the centromeres of homologous chromosomes and "pull" them towards opposite ends of the cell.The mechanisms are a little more complicated than "grabbing" and "pulling," but for this question the mechanisms are of little importance.
During meiosis, tetrads, which are connected by a synapse partway down their length, line up along the cellular equator during metaphase I. The tetrads are then separated during anaphase I as the spindle fibers pull the tetrads apart towards opposite sides of the cell.
The chromosomes split equally and move to the opposite sides of the cell.
the chromatids holding the chromosome together loosen
Yes, anaphase is a stage of nuclear division in both mitosis and meiosis. In anaphase, sister chromatids (or homologous chromosomes in meiosis) are pulled apart towards opposite ends of the cell by the spindle fibers. This ensures that each daughter cell receives the correct number of chromosomes.
The chromatids become daughter chromosomes during the anaphase stage of meiosis, specifically during anaphase II in the case of meiosis II. In these stages, the chromatids are separated and move towards opposite poles of the cell, becoming individual chromosomes.
telophase it is actually Anaphase where the sister chromatids are separated and they are pulled to opposite poles. Telephase and Cytoknesis is when the cell forms the nuclear envelope and nucleolus. The cell is then divided at the Metaphase plate and the two new daughter cells appear.
During anaphase, the centrosomes (which have moved to opposite poles of the cell) release microtubules from their centrioles which then pull the chromosomes towards them, the double stranded chromosomes then split at the centromere and thus each pole of the chromosome has a copy of every chromosome. I assume you're talking about meiotic division though and in this case the spindle fibres/ microtubules dont split the chromosomes in half, rather, the chromosomes line up in homologous pairs (instead of in single file) and the spindle fibres pull one of the entire homologous double stranded chromosomes to its designated pole.
During anaphase I of meiosis, tetrads (pairs of homologous chromosomes) separate and move towards opposite poles of the cell. This results in the reduction of chromosome number and ensures genetic diversity in the daughter cells.
In mitotic anaphase, sister chromatids separate and move towards opposite poles of the cell, resulting in genetically identical daughter cells. In meiotic anaphase II, homologous chromosomes have already separated in meiosis I, so sister chromatids now separate and move towards opposite poles, resulting in haploid daughter cells with genetic variation.