postsynapsisn.

Brit.

/ˌpəʊs(t)sᵻˈnapsɪs/, U.S.

/ˌpoʊs(t)səˈnæpsəs/

Origin: Formed within English, by derivation. Etymons: post- prefix, synapsis n.

Etymology: < post- prefix + synapsis n.

Biology.

Originally: a stage of meiosis after synapsis; spec. †(a) the stage in late anaphase during which paired chromosomes or chromatids become completely separated (obsolete); (b) the diplotene stage of meiosis, during which paired DNA strands begin to separate and chiasmata become visible (now rare or disused). In later use: (Molecular Biology) the final stage of genetic recombination, involving the processes by which the continuity of nucleic acid molecules which have undergone recombination is restored.

ΘΚΠ

the world > life > biology > biological processes > genetic activity > [noun] > stages of mitosis or meiosis

resting stage1810

prophase1884

anaphase1887

metaphase1887

synapsis1895

telophase1895

maturation division1896

postsynapsis1898

strepsinema1900

synizesis1905

interkinesis1906

pachynema1909

telosynapsis1909

leptonema1911

metasyndesis1911

strepsitene1911

zygonema1911

zygotene1911

leptotene1912

pachytene1912

interphase1913

telosyndesis1920

prometaphase1931

dictyotene1957

dictyate1958

1898 T. H. Montgomery in Zool. Jahrbücher: Anat. 11 28 The postsynapsis, a term introduced here for the first time, is a well marked stage of the anaphase, distinguishable alike from the preceding synapsis as from the following telophase.

1909 Bot. Gaz. 47 186 The relationship of the chromatin thread in prophase, the loops in synapsis, and the bivalent chromosomes of postsynapsis, may be clearly followed.

1911 Jrnl. Morphol. 22 753 My postsynapsis stage, equivalent to the diplotene.

1923 Amer. Jrnl. Bot. 10 455 Most of the pairs seem to be in contact with the nucleolus, or very near it; this is a condition which I find in post-synapsis.

1971 A. J. Clark in Ann. Rev. Microbiol. 25 444 During postsynapsis the recombinants are committed to form recombinant molecules.

1996 Jrnl. Molecular Biol. 256 61/1 Our result, showing that the supercoiling requirement is more stringent for postsynapsis, can be interpreted in two ways.

2001 Proc. National Acad. Sci. U.S.A. 98 8448/1 Previous work with yeast recombination proteins has established that Rad54 protein functions in the synaptic phase of Rad51 protein-mediated in vitro recombination, but did not address directly a possible role during postsynapsis.

This entry has been updated (OED Third Edition, December 2006; most recently modified version published online March 2022).

单词	postsynapsis
释义	postsynapsisn. Brit. /ˌpəʊs(t)sᵻˈnapsɪs/, U.S. /ˌpoʊs(t)səˈnæpsəs/ Origin: Formed within English, by derivation. Etymons: post- prefix, synapsis n. Etymology: < post- prefix + synapsis n. Biology. Originally: a stage of meiosis after synapsis; spec. †(a) the stage in late anaphase during which paired chromosomes or chromatids become completely separated (obsolete); (b) the diplotene stage of meiosis, during which paired DNA strands begin to separate and chiasmata become visible (now rare or disused). In later use: (Molecular Biology) the final stage of genetic recombination, involving the processes by which the continuity of nucleic acid molecules which have undergone recombination is restored. ΘΚΠ the world > life > biology > biological processes > genetic activity > [noun] > stages of mitosis or meiosis resting stage1810 prophase1884 anaphase1887 metaphase1887 synapsis1895 telophase1895 maturation division1896 postsynapsis1898 strepsinema1900 synizesis1905 interkinesis1906 pachynema1909 telosynapsis1909 leptonema1911 metasyndesis1911 strepsitene1911 zygonema1911 zygotene1911 leptotene1912 pachytene1912 interphase1913 telosyndesis1920 prometaphase1931 dictyotene1957 dictyate1958 1898 T. H. Montgomery in Zool. Jahrbücher: Anat. 11 28 The postsynapsis, a term introduced here for the first time, is a well marked stage of the anaphase, distinguishable alike from the preceding synapsis as from the following telophase. 1909 Bot. Gaz. 47 186 The relationship of the chromatin thread in prophase, the loops in synapsis, and the bivalent chromosomes of postsynapsis, may be clearly followed. 1911 Jrnl. Morphol. 22 753 My postsynapsis stage, equivalent to the diplotene. 1923 Amer. Jrnl. Bot. 10 455 Most of the pairs seem to be in contact with the nucleolus, or very near it; this is a condition which I find in post-synapsis. 1971 A. J. Clark in Ann. Rev. Microbiol. 25 444 During postsynapsis the recombinants are committed to form recombinant molecules. 1996 Jrnl. Molecular Biol. 256 61/1 Our result, showing that the supercoiling requirement is more stringent for postsynapsis, can be interpreted in two ways. 2001 Proc. National Acad. Sci. U.S.A. 98 8448/1 Previous work with yeast recombination proteins has established that Rad54 protein functions in the synaptic phase of Rad51 protein-mediated in vitro recombination, but did not address directly a possible role during postsynapsis. This entry has been updated (OED Third Edition, December 2006; most recently modified version published online March 2022). < n.1898
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