The 2nd stage of mitosis, in which the spindle is complete and the chromosomes, attached to microtubules at their kinetochores, are all aligned at the metaphase plate. Anaphase The 3rd stage of mitosis, in which the chromatids of each chromosome have separated and the daughter chromosomes are moving to the poles of the cell. Telophase The 4th and final stage of …
25. Which of the following events occurs first during meiosis? a. homologous chromosomes separate and are pulled to opposite poles of the cell b. sister chromatids separate and are pulled to opposite poles of the cell c. chromosomes decondense d. crossing over of homologous chromosomes e. pairs of homologous chromosomes align along the ...
Which of the events occur during anaphase? a) a spindle made of microtubules is present during anaphase b) genetically identical chromosomes (previously sister chromatids) move to opposite poles during anaphase. c) the centrioles are at opposite poles during anaphase d) cohesins joining sister chromatids at the centromeres are cleaved during ...
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.
Anaphase: During anaphase, the centromere splits, allowing the sister chromatids to separate. The kinetochore spindle fibers shorten, allowing for 46 of the newly- freed chromatids to be dragged to one end of the cell and the remaining 46 chromatids to be dragged to the opposite end of the cell.
In anaphase II, the sister chromatids separate and are pulled towards opposite poles of the cell. In telophase II, nuclear membranes form around each set of chromosomes, and the chromosomes decondense.
During anaphase, the sister chromatids separate and begin to migrate to opposite poles of the cell, and a cleavage furrow begins to develop.
The result of nondisjunction is aneuploidy, which is when cells contain either an extra or missing chromosome. In contrast, euploidy is when a cell contains the normal chromosome complement. Nondisjunction may occur any time a cell divides, so it can happen during mitosis, meiosis I, or meiosis II.Feb 7, 2020
When chromatids "cross over," homologous chromosomes trade pieces of genetic material, resulting in novel combinations of alleles, though the same genes are still present. Crossing over occurs during prophase I of meiosis before tetrads are aligned along the equator in metaphase I.
During cytokinesis, the cytoplasm of the cell is divided in half, and the cell membrane grows to enclose each cell, forming two separate cells as a result. The end result of mitosis and cytokinesis is two genetically identical cells where only one cell existed before.Dec 17, 2021
Metaphase is a stage in the cell cycle where all the genetic material is condensing into chromosomes. These chromosomes then become visible. During this stage, the nucleus disappears and the chromosomes appear in the cytoplasm of the cell.
The result of meiosis is 4 gametes, or sex cells, that each contain half of the genetic information in the parent organism.Dec 9, 2021
Two separate classes of movements occur during anaphase. During the first part of anaphase, the kinetochore microtubules shorten, and the chromosomes move toward the spindle poles. During the second part of anaphase, the spindle poles separate as the non-kinetochore microtubules move past each other.
Mitosis results in two identical daughter cells, whereas meiosis results in four sex cells.Jul 21, 2021
During anaphase, paired centromeres in each distinct chromosome begin to move apart as daughter chromosomes are pulled centromere first toward opposite ends of the cell. During telophase, newly formed nuclei enclose separated daughter chromosomes.Feb 23, 2019