By Nolan, Mackenzie, Megan and Caed Meiosis  By Nolan, Mackenzie, Megan and Caed

Prophase I  Some of the key points of this stage are when the nucleolus disappears   The spindle fibers will form and homologous chromosomes will pair up  The chromosomes will attach to spindle fibers  

Metaphase I - During metaphase I, the chromosomes line up in pairs of 2  - The switch of genes and DNA between the 2 pairs of chromosomes is now complete.

Anaphase I The spindle fibers contract and shorten Homologous chromosomes attached to the centromeres separate and are pulled to opposite poles by the spindle fibers

Telophase I The chromosomes will separate to the different sides of the cell Also the chromones will return into their non condensed forms In the cell, the nuclear membrane is reformed  Sometimes the division of the cytoplasm will happen, making the two haploid daughter cells form

Interkinesis  During interkinesis the parent cell splits for the first time, leaving 2 cells with genetically different DNA Unlike mitosis, the chromatids do not separate during the first split. But later on in the second split, the chromatids do split.

Prophase II Similar to the prophase in Mitosis The nuclear envelope will disappear as the chromosomes start to condense Centrosomes will separate from each other as the spindle fibers try to catch on to the chromosomes  

Metaphase II This is the stage will the chromosomes will align in the center of the cell The chromosomes align because of the attachment of the spindle fibers to the centromeres of chromosomes In this type of Metaphase there is segregation, this is the difference between the two types of Metaphase

Anaphase II The spindle fibers contract and shorten The centromeres pulled apart and separate Both of the two chromatids of each chromosomes move to opposite poles of the cell

Telophase II The nuclear envelope will form around each of the sets of chromosomes In this stage there can be crossing- over between some of the chromosomes

Cytokinesis The cells will divides in two Also the cells will grow and make proteins like in interphase in mitosis

Bibliography  Most of the information was taken from the worksheet “Key Events in Meiosis” BLM 2-29 Some of the other information is from these websites: https://www.bioexplorer.net/Divisions_of_Biology/Cell_biology/Meiosis/#Telophase_I http://www.phschool.com/science/biology_place/biocoach/meiosis/teloi.html

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