英语词汇“primary spermatocyte”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

primary spermatocyte n. Biology a diploid spermatocyte that gives rise in the first division of meiosis to two secondary spermatocytes.

ΘΚΠ

the world > life > biology > biological processes > procreation or reproduction > reproductive substances or cells > [noun] > sperm > sperm cell

spermatoon1852

spermatogonium1861

spermatocyte1886

spermatid1889

primary spermatocyte1896

spermogonium1913

1896 E. B. Wilson Cell iii. 122 The primary spermatocyte first divides to form two daughter-cells known as spermatocytes of the second order or sperm-mother-cells. Each of these divides again..to form two spermatids or sperm-cells.

1927 Jrnl. Exper. Zool. 49 463 The darkly colored pycnotic primary spermatocytes..are the most conspicuous cells in the germinal epithelium.

1999 Proc. National Acad. Sci. U.S.A. 96 5626/2 In late meiotic prophase..the primary spermatocyte nuclei make final preparations for the first meiotic division.

spermatocyte n.

Brit.

/ˈspəːmətə(ʊ)sʌɪt/

U.S.

/ˈspərmədəˌsaɪt/

/ˌspərˈmædəˌsaɪt/

a cell which gives rise to spermatids by meiosis; the primary spermatocyte gives rise in meiosis I to two secondary spermatocytes, which each give rise in meiosis II to two spermatids.

ΘΚΠ

the world > life > biology > biological processes > procreation or reproduction > reproductive substances or cells > [noun] > sperm > sperm cell

spermatoon1852

spermatogonium1861

spermatocyte1886

spermatid1889

primary spermatocyte1896

spermogonium1913

1886 Encycl. Brit. XX. 412/2 One kind..divide into a mass or spermatogemma of small cells (spermatocytes).

1920 L. Doncaster Introd. Study Cytol. v. 61 After a number of divisions..the spermatogonia and oogonia cease to divide and begin to increase considerably in size. At this stage they are called primary spermatocytes..and oocytes.

1959 W. Andrew Textbk. Compar. Histol. xii. 490 [In fishes] spermatogenesis consists of the same general cytological stages as in the invertebrates: namely, spermatogonia, spermatocytes, spermatids, and spermatozoa.

1970 E. J. Ambrose & D. M. Easty Cell Biol. xii. 390 Only one ovum is formed from each oöcyte in contradistinction to the four sperm formed from each spermatocyte.

单词	primary spermatocyte
释义	> as lemmas primary spermatocyte primary spermatocyte n. Biology a diploid spermatocyte that gives rise in the first division of meiosis to two secondary spermatocytes. ΘΚΠ the world > life > biology > biological processes > procreation or reproduction > reproductive substances or cells > [noun] > sperm > sperm cell spermatoon1852 spermatogonium1861 spermatocyte1886 spermatid1889 primary spermatocyte1896 spermogonium1913 1896 E. B. Wilson Cell iii. 122 The primary spermatocyte first divides to form two daughter-cells known as spermatocytes of the second order or sperm-mother-cells. Each of these divides again..to form two spermatids or sperm-cells. 1927 Jrnl. Exper. Zool. 49 463 The darkly colored pycnotic primary spermatocytes..are the most conspicuous cells in the germinal epithelium. 1999 Proc. National Acad. Sci. U.S.A. 96 5626/2 In late meiotic prophase..the primary spermatocyte nuclei make final preparations for the first meiotic division. extracted from primaryadj.n. primary spermatocyte spermatocyte n. Brit. /ˈspəːmətə(ʊ)sʌɪt/ , U.S. /ˈspərmədəˌsaɪt/ , /ˌspərˈmædəˌsaɪt/ a cell which gives rise to spermatids by meiosis; the primary spermatocyte gives rise in meiosis I to two secondary spermatocytes, which each give rise in meiosis II to two spermatids. ΘΚΠ the world > life > biology > biological processes > procreation or reproduction > reproductive substances or cells > [noun] > sperm > sperm cell spermatoon1852 spermatogonium1861 spermatocyte1886 spermatid1889 primary spermatocyte1896 spermogonium1913 1886 Encycl. Brit. XX. 412/2 One kind..divide into a mass or spermatogemma of small cells (spermatocytes). 1920 L. Doncaster Introd. Study Cytol. v. 61 After a number of divisions..the spermatogonia and oogonia cease to divide and begin to increase considerably in size. At this stage they are called primary spermatocytes..and oocytes. 1959 W. Andrew Textbk. Compar. Histol. xii. 490 [In fishes] spermatogenesis consists of the same general cytological stages as in the invertebrates: namely, spermatogonia, spermatocytes, spermatids, and spermatozoa. 1970 E. J. Ambrose & D. M. Easty Cell Biol. xii. 390 Only one ovum is formed from each oöcyte in contradistinction to the four sperm formed from each spermatocyte. extracted from spermato-comb. form < as lemmas
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> as lemmas