packages of DNA that contain genetic information
single, circular DNA chromosome
-eukaryotes contain multiple chromosomes
-DNA wrapped around proteins (histones)
-DNA and histones form beadlike structures (nucleosomes)
complex of chromosome and protein
cell grows, prepares for cell division and divides
prokaryotic cell cycle
eukaryotic cell cycle
interphase and M phase
period of growth between cell divisions
cell prepares for cell division
division of nucleus
-genetic material inside nucleus condenses
-spindles start to form
duplicated strands of DNA molecule attached here
each DNA strand in a duplicated chromosome
-spindle fibers extend from this organelle
-only found in animal cells
-centromeres line up across center of cell
-spindle fibers connect to the centromere
chromosomes separate and move along spindle fibers to opposite sides of the cell
-chromosomes spread out into chromatin
-nuclear envelopes reform
division of the cytoplasm
cytokinesis in animal cells
cell membrane drawn inward to create two cells
cytokinesis in plant cells
cell plate forms halfway between divided nuclei
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