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21 Cards in this Set
- Front
- Back
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Cell Division |
The series of events that take place in a cell leading to its and duplication. |
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Mitosis |
A type of division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus. |
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Interphase |
The period that results in the most growth for a cell in preparation for cell division. The DNA in the nucleus is duplicated. |
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G2 |
The period in the cell cycle from the completion of DNA replication to the beginning of cell division. |
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Restriction Point |
A point in G1 in which no extra cellular proliferation is required thereafter. |
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Cytokinesis |
The cytoplasmic division of a cell at the end of cell division. |
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Daughter Cell |
One of two cells that are the result of mitosis are the exact copy of the parent cell. |
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Nucleotide Base Pairing |
Any of the pairs of nucleotides connecting the complementary strands of a molecule of DNA or RNA. |
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Hydrogen Bond |
A weak bond between two molecules resulting from an electrostatic attraction between a proton in one molecule and an electronegative atom in the other. |
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DNA polymerase |
A type of enzyme that is responsible for forming new copes of DNA. |
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Semiconservative Replication |
Produces two copies that each contain one of the original strands and one new stand of DNA. |
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Histone |
A group of protein found in chromatin. |
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Chromosome |
A threadlike structure of Nucleic acids and protein found in the nucleus of most living cells. Carries genetic information in the form of genes. |
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Chromatin |
The material of which the chromosomes of organisms other than bacteria are composed. |
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Mutation |
A random change in the genetic coding of an organism that occurs during cell division. |
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Mutagen |
An agent, such as radiation or a chemical substance, that causes genetic mutation. |
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Excision repair |
A cellular mechanism that repairs damaged DNA throughout the cell cycle. |
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Sister Chromatids |
Either of the two identical copies formed by the replication of a single chromosome. |
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Centromere |
The point on a chromosome by which it is attached to a spindle fiber during cell division. |
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Aneuploid |
Having particular genes or chromosomal regions present in extra or fewer copies than in normal type. |
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Prophase |
The first stage of cell division, before metaphase, during which the chromosomes become visible as paired chromatids and the nuclear envelope disappears. |
