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Diplotene


diplotene
a state in prophase of meiosis I in which the chromatids become visibly separate
Source: Jenkins, John B. 1990. Human Genetics, 2nd Edition. New York: Harper & Row ...
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Diplotene
[Gr. diplo - double; Gr. tainia - ribbon]. The fourth stage of prophase 1 of meiosis, following the pachytene stage, in which there is continued shortening and thickening of the chromosomes.
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diplotene
Axial elements begin to decorate chromosomal fibers.
Axial elements approach one another, becoming lateral elements.
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Diplotene
The term proposed by von Winiwarter (1900), originally as an adjective, ...
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Diplotene
DNA recombination is complete.
The synaptonemal complex begins to break down.
The chromatids begin to pull apart revealing
chiasmata.
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During the diplotene stage, the synaptonemal complex degrades. Homologous chromosomes fall apart and begin to repel each other. The chromosomes themselves uncoil a bit, allowing some transcription of DNA.
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In the human ovary, oocytes are stored in the diplotene stage since fetal life. Only just prior to ovulation meiosis I is resumed and is then completed at the time of ovulation (meiosis II ends only just after fertilization).
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