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602 - Meiosis

TermDefinition
Interphase - chromatin has not condensed to form chromosomes the cell grows, replicates its DNA, and prepares for cell division
Prophase I - Chromosomes condense and become visible The nuclear envelope breaks down Centrioles and spindle fibers become visible Homologous chromosomes pair up Crossing over occurs
Metaphase I - Homologous pairs of chromosomes line up in the center of the cell they assort independently, meaning it is random as to whether a chromosome is on the left or the right
Anaphase I - Homologous chromosomes are pulled to opposite ends of the cell
Telophase I and Cytokinesis - New nuclear envelopes form the cytoplasm is divided into two daughter cells Completes meiosis I Each daughter cell is haploid, but the sister chromatids have not yet been pulled apart
Prophase II - The nuclear membranes break down Centrioles and spindle fibers are visible
Metaphase II - Chromosomes line up in the middle of the cell
Anaphase II - sister chromatids are pulled apart
Telophase II and cytokinesis - nuclear membranes form around the chromosomes Four genetically unique haploid gametes have been created
Purpose of meiosis - to produce gametes for sexual reproduction
gametes - sex cells sperm cells and egg cells
number of daughter cells produced by meiosis - four
meiosis produces - four genetically unique haploid daughter cells
haploid - one version of each chromosome
Created by: Mr. Ford
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