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SC 09: Meiosis

QuestionAnswer
Prophase I - Homologous chromosomes pair up - Non-sister chromatids exchange genetic material (crossing over)
Definition of Crossing Over? When non-sister chromatids exchange genetic material
Metaphase I Homologous chromosome pair up at the equator (middle of the cell)
Anaphase I Homologous chromosomes separate and are pulled to opposite poles by the spindle fibres
Telophase I One chromosome from each homologous pair is at each pole (end) of the cell
Interkinesis - The stage between cell divisions - The cell will grow and make proteins (like interphase in mitosis) - It is different than interphase in mitosis because there is no DNA replication
Prophase II There is one chromosome of the homologous pair in each cell
Metaphase II The x-shaped chromosomes form a single line across the middle of the cell
Anaphase II - Sister chromatids move to opposite poles of the cell - once they seperate each sister chromatid is considered to be a chromosome
Telophase II - Spindle fibres begin to dissapear - a nuclear membrane forms around each set of chromosomes
Cytokinesis The two daughter cells are seperated
List the usual procedure in order...? 1. Prophase (early and late) 2. Metaphase 3. Anaphase 4. Telophase 5. Interkinesis/cytokinesis
Created by: tasiakarasick
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