7th Grade, Mitosis notes
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| Takes place/occurs in human body (somatic) cells; (these are every cell except the egg or sperm). | Mitosis
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| Chromosomes multiply and divide when the cell reproduces, producing cells that are identical to parent cell cause there's no genetic information being exchanged or rearranged. | Asexual reproduction
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| What happens when mutation occurs? | There will be a different or wrong cell being produced.
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| Uncoiled strands of DNA | Chromatin
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| coiled chromatin; contains genes | Chromosomes
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| Segments of DNA on a chromosome that codes for a certain hereditary trait | Genes
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| One part of a duplicated chromosome | Chromatid
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| 2 chromatids are attached by what? | Centromere
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| Specialized DNA sequence of a chromosome that links with a pair of chromatids. | Centromere
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| Chromosome pairs that are structurally similar and contain information for same genes; ( can have different expression of information on those genes) | Homologous pairs
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| Each body cell has how many chromosomes? | 46 chromosomes
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| Contain all homologous pairs of chromosomes. | Diploid Cells
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| Chromosomes (in the form of chromatin) and organelles replicate. | Interphase
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| -Chromatin coils into chromosomes (hint: each chromosome now is made of 2 chromatids joined by a centromere) -nuclear membrane disappears -Spindle fibers form | Prophase
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| Chromosomes move to the center of the cell( the equator) | Metaphase
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| -Chromosomes divide and chromatids separate -Chromatids are pulled to opposite sides pulled by spindle fibers | Anaphase
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| -Centrioles and spindle fibers disappear -Chromatids unwind back into chromatin -Nuclear membrane reforms -Cytoplasm starts to divide into 2 cells | Telophase
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| -Cytoplasm in parent cell divides -there are now 2 daughter cells that have DNA identical to the parent cell | Cytokinesis
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| Is Cell division a continuous cycle? | Yes
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