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9 Cards in this Set
- Front
- Back
leptotene
|
first part of prophase I in meiosis
- chromosomes begin to condense |
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zygotene
|
2nd part of prophase I in meiosis
- homologous chromosomes begin to pair (synapsis) |
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synapsis
|
pairing of homologues
|
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pachytene
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3rd part of prophase I in meiosis
tetrad or bivalent sometimes visible |
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bivalent
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- pair of synapsed chromosomes
aka tetrad |
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tetrad
|
- 4 chromatids in synapsis
aka bivalent |
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diplotene
|
4th part of prophase I in meiosis
- synapsed c’somes begin to separate - homologues remain together at chiasmata |
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chiasmata
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apparent points of crossing over
|
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diakinesis
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5th part of prophase I in meiosis
- homologues segments that are not connected by chiasmata move farther apart - spindle begins to form - nuclear envelope breaks down |