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21 Cards in this Set
- Front
- Back
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Cell division in multi-cellular organisms is used for |
repair of damaged tissues Growth of the entire organism Development from a fertilized embryo |
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In the cells of eukaryotic organisms |
the DNA is arranged into chromosomes |
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What is a chromatid |
A special region that holds two centromeres together. |
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In which phase of the cell cycle does the replication of chromosomes occur? |
S Phase |
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Kinetochore mictotubles attach to chromosomes |
prometaphase |
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Chromosomes condense and the duplicated centrosomes move to opposite ends of the cell. |
Prophase |
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Sister chromatids separate |
Anaphase |
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the nuclear envelope reforms |
telophase |
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Chromatids are lined up in the middle of the cell. |
Metaphase |
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Which stage of M phase is different between animal and plant cells? |
Cytokinesis |
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Which of the following is NOT a part of the mitotic spindle? Kinetochore microtubles Aster Non-kinetochore microtubules Centromeric Microtubules |
Aster |
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In animals, somatic cells are produced by mitosis and ______ are produced by meiosis. |
Gametes |
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If there are 40 chromatids in a cell at metaphase of meiosis I, how many chromosomes are there in each daughter cell at the end of meiosis II? |
10 |
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After telophase I of meiosis, the chromosomal makeup of each daughter cell is, |
haploid, and the chromosomes are composed of a single chromatid. |
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Crossing over occurs between |
non-sister chromatids of homologous chromosomes. |
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Homologous chomosomes synapse and crossing over occurs |
in meiosisI only |
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Sister chromatids are separated from each other |
in mitosis and meiosis II. |
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Homologous chromosomes are separated from each other |
in meiosis I only. |
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The process that is proceeded by the replication of the DNA |
mitosis and meiosis I. |
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How many homologous pairs will a species have if it has a chromosome number of 2n=16. |
8 homologous pairs |
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The physical location of a specific gene on a chromosome is called |
the locus |
