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Meiosis
the stages of Meiosis
8
Biology
Undergraduate 1
02/27/2008

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Term
Interphase
Definition
DNA is replicated in the S phase
Term
Prophase 
Definition
Visible chromosomes made of two sister chromatids begin to align, centrosomes head towards opposite ends
Term
Prometaphase
Definition
Chromosomes form diads which align to form tetrads which cross over and recombination occurs, nuclear envelope disappears and centrosomes grow further.
Term
Metaphase
Definition
Chromosomes are fully condensed and aligned. Spindle fibers hook up with the kinetochore
Term
Anaphase
Definition
Diads are pulled apart by spindle fibers which use the protien dynein. This protien uses ATP to pull.
Term
Telophase
Definition
chromosomes are now on opposite ends and the nuclear envelope forms, chromosomes decondense.
Term
Prophase 2
Definition
Chromosomes condense again but only one diad from each chromosome pair
Term
whats the difference between Meiosis and Mitosis
Definition
In meiosis the chromosome number is half of the parent cell while in mitosis it is the same. Meiosis creates 4 cells while mitosis creates 2 cells. Recombination occurs only in meiosis.
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