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11 Cards in this Set
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identical twins (formed)
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-8 cell stage embroy splits in 2 and each develops
-need "reset" so they can give rise to cell types |
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fraternal twins (formed)
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2 seperate eggs that are fertalized
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asymmetric cell division
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a cell divides to produce 2 cells that are different from each other
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transcription factors
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proteins that control transcription (expression of genes) by speeding up or slowing down production of proteins
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zygote
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-initial cell formed when a new organism is produced by sexual reproduction
-all cells are descendants from the zygote in a human |
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totipotent
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stem cell that is able to produce any type of cell
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pluripotent
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stem cell that is able to produce most all different cell types
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multipotent
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stemm cell that is able to produce a number of different closely related cell types
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Animal vs. Plant
(Mitosis) |
Animal cell-has centrioles
-cleavage furrow Plant cell-cell plate to make new cell wall |
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Spermatogenesis
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spermatogonium
primary spermatoctye secondary spermatoctye spermatids (spermatozoa) |
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Oogenesis
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oogonia
primary oocytes secondary ooctye+1 polar body ovum+3 polar bodies |
