Interphase- This is before meiosis begins and genetic material can be doubled.
The first division of meiosis starts with prophase 1, which is when duplicated chromatin condenses. Every chromosome is made up of two, closely related to sister chromatids. Crossing-over is possible at the end of this stage.
Metaphase 1 is when homologous chromosomes line up at the equatorial plate.
Anaphase 1 is the time at which the homologous pairs separate with sister chromatids remaining attached.
In Telophase 1 two daughter cells are made with each daughter that includes only one chromosome of the homologous pair.
The second division of meiosis is when the gametes form. It starts with Prophase 2; this is where DNA does not get replicated. In Metaphase 2, chromosomes line up at the equatorial plate. During Anaphase 2 centromeres divide and the sister chromatids move separately to each pole. At the Telophase 2 phase cell division is finished. Four haploid daughter cells are collected.
One parent cell produces four daughter cells. There is only half the number of chromosomes in the daughter cell that are found in the original parent cell. If crossing over occurs, they are genetically different.
Meiosis is different from mitosis because there are two cell divisions in meiosis which ends in cells with a haploid number of chromosomes. Overall meiosis, is a very drawn out process and can be complicated to most people, but once you get the just of it, it makes a lot MORE sense!
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| All of the Meiosis Steps! |
http://www.accessexcellence.org/RC/VL/GG/meiosis.php
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