Term
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Definition
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Term
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Definition
| The division of gametes (sex cells) |
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Term
| Synapsis (What, when, effects?) |
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Definition
The pairing of matching homologous chromosomes
during PROPHASE I of MEIOSIS I
usually resulting in genetic recombination |
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Term
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Definition
| Chromosomes have ALREADY duplicated. Bivalents formed. Crossing over occurs. Nucleolus disappears. Chromosomes line up at the metaphase plate. |
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Term
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Definition
| Chromosomes condense and attach to the nuclear envelope. They then begin migration towards metaphase plate. |
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Term
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Definition
| Homologous chromosomes move to opposite poles. Sister chromatids stay together. |
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Term
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Definition
| Two daughter cells are produced each containing half of the chromosome from the parent cell. |
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Term
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Definition
| No further replication of chromosomes, nuclear envelope breaks down and mitotic spindle forms. |
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Term
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Definition
| Chromosomes arrange on the metaphase plate, |
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Term
| When and where does the Meiotic Spindle form? |
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Definition
| During Prophase (or Prophase I) in the Cytoplasm, between the two pairs of centioles (2 centrosomes) as they migrate to opposite poles of the cell |
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Term
| When does the nuclear envelope disappear and reappear? Why? |
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Definition
| End of Prophase (I), Telophase. It disappears to allow the the spindle to enter the nucleus and get to the chromosomes. |
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Term
| What do you call the sites where crossing over occurs? |
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Definition
Chiasmata
(singular: chiasma) |
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