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Alternate forms of a given gene that may produce differences in structure or function. |
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The phase in which sister chromatids separate and are pulled to opposite poles of the cell. |
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A form of reproduction in which offspring are formed from a single parent, rather than through the union of gametes from two parents. |
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Chromosomes which have similar appearance, similar genetic composition, and are paired in diploid cells of both sexes. |
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Cell division in prokaryotic cells |
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The sequence of activities that occurs from one cell division to the next. |
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The process in which one copy of each chromosome and usually about half the cytoplasm are parceled out into each of the two daughter cells. |
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A structure shaped like a flattened sac, surrounded by plasma membrane and filled with sticky carbohydrates. This occurs only in plant cells. |
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Objects containing microtubules which will eventually pinch the cell membrane. |
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The point where two DNA double helices attach. |
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Crosses where the maternal and paternal chromosomes intertwine. |
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Individual organisms that are genetically identical toa preexisting individual. |
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The creation of one or more individual organisms (clones) that are genetically indentical to a preexisting individual. |
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The exchange of DNA between maternal and paternal chromosomes at chiasmata. |
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When generic cells begin to become specialized to a certain task. |
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A word used to describe cells with homologous chromosomes. |
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A chromosome with two identical sister chromatids |
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The name for cells that contain only one of each type of chromosome. |
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Chromosomes that contain the same genes. |
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The process during which the cell acquires nutrients from its environment, grows, and duplicates its chromosomes. |
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An entire set of stained chromosomes form a single cell. |
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A protein-containing structure that serves as an attachment site for the ends of spindle microtubules. |
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A specific place on a specific chromosome. |
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The process involving two rounds of cytokinesis to produce four daughter cells that can become gametes. |
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A proces that occurs in ovaries and testes and involves meiosis. |
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The phase in which the Chromosomes align along the equator of the Cell. |
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The process which consists of nuclear division followed by cytoplasmic division. |
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The phase in which the chromosomes condense and the spindle microtubules form and attach to the chromosomes. |
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the formulation of new combinations of allelss on a chromosome. |
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Either an X or Y chromosome. |
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The process involving the fusion of the gamete from each parent forming a genetically unique offspring. |
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They originate from the centrioles and pinch the cell membrane. |
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The "endcaps" of chromosomes. |
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The phase in which Nuclear envelopes form around both groups of chromosomes. |
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