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14 Cards in this Set
- Front
- Back
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Leptotene |
It is the first substage of prophase 1 in meiosis in which the chromosomes become visible as single threads. |
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Zygotene |
It is the second substage of prophase 1 in whoch pairing of homologous chromosomes (synapsis ) occur. Each pair of chromosomes are called bivalent. |
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Pachytene |
It is the third substage of prophase during which the crossing over begins. |
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Diplotene |
It is the fourth substage of prophase 1 during which crossing over continues and two homologous chromosomes in each pair begin to separate . They are held together at points called chiasmata. |
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Diakinesis |
It is the last substage of prophase in which nuclear membrane and nucleolus disappear . Spindle begins to be formed at this stage. |
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Cell division |
It is the process by which a cell divides into two or more daughter cells. |
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Chromatids |
Two identical parts of a chromosome are called sister chromatids. |
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Centromeres |
It is a part of chromosome through which chromatids are linked. |
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Centrioles |
Centriole is a cell structure composed mainly of protein , located in the cytoplasm near the nuclear envelope. |
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Spindle |
A fan like micrtubule structure formed during mitosis or meiosis that helps separate the chromosomes to the opposite ends . |
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Cell plate |
It is a disc like structure that forms in plant cells to form the wall between daughter cells when the cyroplasm divides during cytokinesis. |
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Cleavage furrow |
Structure that forms in animal cells when the cytoplasm divides during cytokinesis. |
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Chromosomes |
Chromosomes are thread like structure fmfound in dna that carry genetic information of an organism in the form of genes. |
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Chromatin |
Chromatin is a complex combination of dna and proteins. They condense to form chromosomesand are present in the nuclei of eukaryotuc cells. |
