leptoneman.

/lɛptəʊˈniːmə/

Etymology: < French leptonema (coined by V. Grégoire 1907, in La Cellule 24 371): see lepto- comb. form, -nema suffix.

Cytology.

= leptotene n.

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

1911 Q. Jrnl. Microsc. Sci. 57 8 For the various stages of the prophase I have used the nomenclature now generally adopted, based on that proposed by von Winiwarter in his work on mammalian oögenesis. The stages run: leptonema, zygonema, pachynema, strepsinema or diplonema (adjectives leptotene, zygotene, etc.), and diakinesis.

1924 L. Doncaster Introd. Study Cytol. v. 67 The early stage of the primary spermatocyte, when the nucleus contains a network of thin threads, is called leptonema.

1971 Chromosoma 35 11 Nuclei of cells in leptonema fixed within one half hour after being placed into culture characteristically contained condensed chromatin attached to a less dense fibrous core.

1984 Cytologia 49 88 Sporocytes in a single anther were in meiotic stages from leptonema to pollen development.

This entry has not yet been fully updated (first published 1997; most recently modified version published online June 2018).

单词	leptonema
释义	leptoneman. /lɛptəʊˈniːmə/ Etymology: < French leptonema (coined by V. Grégoire 1907, in La Cellule 24 371): see lepto- comb. form, -nema suffix. Cytology. = leptotene n. 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 1911 Q. Jrnl. Microsc. Sci. 57 8 For the various stages of the prophase I have used the nomenclature now generally adopted, based on that proposed by von Winiwarter in his work on mammalian oögenesis. The stages run: leptonema, zygonema, pachynema, strepsinema or diplonema (adjectives leptotene, zygotene, etc.), and diakinesis. 1924 L. Doncaster Introd. Study Cytol. v. 67 The early stage of the primary spermatocyte, when the nucleus contains a network of thin threads, is called leptonema. 1971 Chromosoma 35 11 Nuclei of cells in leptonema fixed within one half hour after being placed into culture characteristically contained condensed chromatin attached to a less dense fibrous core. 1984 Cytologia 49 88 Sporocytes in a single anther were in meiotic stages from leptonema to pollen development. This entry has not yet been fully updated (first published 1997; most recently modified version published online June 2018). < n.1911
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