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structure across a dividing plant cell that signals the location of new plasma membranes and cell walls
cell organelle, existing in pairs, that occurs in the centrosome and may help organize a mitotic spindle for chromosome movement during animal cell division
microtubule organizing center; organizes the miotic spindle, contains two barrel-shaped centrioles
network of fibrils consisting of DNA and associated proteins observed within a nucleus that is not dividing
protein that cycles in quantity as the cell cycle progresses; combines with and activates the kinases that function to promote the events of the cycle
stages of the cell cycle during which growth and DNA synthesis occur when the nucleus is not actively dividing
a disk formed during metaphase in which all of a cell's chromosomes lie in a single plane at right angles to the spindle fibers
process in which a parent nucleus produces two daughter nuclei, each having the same number and kinds of chromosomes as the parent nucleus
phase of mitosis which generally begins with the disintegration of the nuclear membrane
mitotic phase during which chromatin condenses so that chromosomes appear; chromosomes are scattered
one of two genetically identical chromosomal units that are the result of DNA replication and are attached to each other at the centromere
tip of the end of a chromosome that shortens with each cell division and may thereby regulate the number of times a cell can divide
fusion of sperm and egg nuclei, producing a zygote that develops into a new individual
haploid generation of the alternation of generations life cycle of a plant; produces gametes that unite to form a diploid zygote
process in which new genetic information is incorporated into a chromosome or DNA fragment
member of a pair of chromosomes that are alike and come together in synapsis during prophase of the first meiotic division
alleles of unlinked genes segregate independently of each other during meiosis so that the gametes contain all possible combinations of alleles
period of time between meiosis I and meiosis II during which no DNA replication takes place
disk-shaped strucutre within the centromere of a chromosome to which spindle microtubules become attached during mitosis and meiosis
recurring pattern of genetically programmed events by which individuals grown, develop, maintain themselves, and reproduce
reproduction involving meiosis, gamete formation, and fertilization; produces offspring with chromosomes inherited from each parent with a unique combination of genes
diploid generation of the alternation of generations life cycle of a plant; produces haploid spores that develop into the haploid generation
recovery from previous division, cell doubles its organelles, accumulates raw materials for DNA synthesis
DNA replication (synthesis), chromosomes enter with 1 chromatid each, chromosomes leave with 2 identical chromatids each
between DNA replication and onset of mitosis; cell synthesizes proteins necessary for division
splitting in between the two replicate chromosomes; produces two daughter cells identical to original cells-asexual reproduction
special type of cell division used only for sexual reproduction that halves the chromosome number prior to fertilization
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