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ch. 10 & 11 pt.2

Cell growth and division

TermDefinition
prophase chromosomes coil up and become visible, nuclear envelope dissolves, a spindle forms, centrioles begin to move to opposite sides of the cell
spindle what holds the chromosomes at their centromeres and pulls them during cell division
metaphase chromosomes moves to the center and line up along the equator. spindle fibers link to the chromosomes at their centromeres
anaphase centromeres divide. the two chromatids move toward the opposite pole as the spindle fibers shorten
telophase nuclear envelope forms around the chromosomes. chromosomes uncoil and the spindle disappears.
homologous(pairs) chromosomes found in even numbers-matched sets-
meiosis the process by which cells divide with the chromosome number reduced by half
tetrad when pairs of homologous chromosomes join together
crossing over portions of one chromosome are broken and exchanged with the corresponding part of the other chromosome
nondisjunction the failure of homologous chromosomes or sister chromatids to separate properly during cell division
gamete haploid reproductive cells
asexual reproduction binary fission- produces identical offspring in prokaryotic cells
Created by: IzzyMarie.13