Answer:
Anaphase
Explanation:
Homologous chromosomes are separated from one another and pulled toward opposite poles of the cell by spindle fibers during the anaphase stage of the meiosis.
Meiosis II consists mainly of 4 stages including;
The chromosomes condense and become visible microscopically during prophase and the spindle formation is initiated.
During metaphase, the chromosome aligns at the center of the cell and the spindles engage each chromosome at the centromere.
During anaphase, the contaction of the centromeres lead to the separation of each chromosome into their sister chromatids. As the shortening of the spindle fibers continue, each sister chromatid begins to migrate to the poles with sister chromatids of the same chromosome moving in opposite directions.
Telophase sees the completion of chromatid's movement to the poles.
Answer:
Anaphase I
Explanation:
Meiosis is a kind of cell division that results in daughter cells with each having a reduced number of chromosomes (by half). Meiosis is employed by sexually-reproducing organisms to produce gametes and hence the chromosome number must be reduced. Since there is a reduction in the chromosome number, meiosis occurs in a two-step division process viz: meiosis I and II.
Both Meiosis I and II consists of the following stages; Prophase, Metaphase, Anaphase, Telophase. The actual separation of nuclear material (CHROMOSOME) occurs in the Anaphase stage of both meiosis I and II. However, the difference between the two divisions is that, in Anaphase of meiosis I, homologous chromosomes (similar but non-identical chromosomes received from each parent) are separate into opposite poles by the spindle microtubules. This is where the reduction in chromosomal number takes place i.e. from diploid (2n) to haploid (n).
In meiosis II, specifically Anaphase II, sister chromatids (replicated chromosomes) separate into opposite poles.
Hence, homologous chromosomes separates from one another and are pulled toward opposite poles of the cell by spindle fibers in the ANAPHASE I of MEIOSIS I.
