?mitosis

mitosis 發(fā)音

英：[ma?'t??s?s]　　美：[ma?'tos?s]

英：　　美：

mitosis 中文意思翻譯

mitosis 短語(yǔ)詞組

1、mitosis anaphase ─── [醫(yī)] 有絲分裂后期

2、gametogenetic mitosis ─── [醫(yī)] 生配子有絲分裂

3、c mitosis c ─── 有絲分裂

4、somatic mitosis ─── [醫(yī)] 體 ─── [細(xì)胞]有絲分裂

5、homeotypic mitosis ─── [醫(yī)] 同型有絲分裂

6、mitosis prophase ─── [醫(yī)] 有絲分裂前期

7、multicentric mitosis ─── [醫(yī)] 多極有絲分裂

8、mitosis telophase ─── [醫(yī)] 有絲分裂末期

9、asymmetrical mitosis ─── [醫(yī)] 不對(duì)稱有絲分裂

10、interphase of mitosis ─── [醫(yī)] 有絲分裂間期

11、pathologic mitosis ─── [醫(yī)] 病理性有絲分裂

12、mitosis metaphase ─── [醫(yī)] 有絲分裂中期

13、pluripolar mitosis ─── [醫(yī)] 多極有絲分裂

14、heterotypic mitosis ─── [醫(yī)] 異型有絲分裂

15、anastral mitosis ─── [醫(yī)] 無(wú)星有絲分裂

16、amphiastral mitosis ─── [醫(yī)] 雙星有絲分裂

17、multipolar mitosis ─── [醫(yī)] 多極有絲分裂

18、aberrant mitosis ─── 畸形有絲分裂

19、atyrpical mitosis ─── [醫(yī)] 異型有絲分裂

mitosis 詞性/詞形變化，mitosis變形

副詞: mitotically |名詞復(fù)數(shù): mitoses |形容詞: mitotic |

mitosis 相似詞語(yǔ)短語(yǔ)

1、mitoses ─── n.有絲分裂（mitosis的復(fù)數(shù)）

2、monosis ─── 單胞菌病

3、limosis ─── n.善饑癥；空腹

4、mimosis ─── 含羞草

5、miosis ─── n.（生殖細(xì)胞的）成熟分裂；減數(shù)分裂；[醫(yī)]瞳孔縮小

6、amitosis ─── n.[細(xì)胞]無(wú)絲分裂

7、ketosis ─── n.[內(nèi)科]酮病

8、meiosis ─── n.[細(xì)胞]減數(shù)分裂；[遺][細(xì)胞]成熟分裂

9、mitotic ─── adj.[細(xì)胞]有絲分裂的；間接核分裂的

mitosis 常見(jiàn)例句（雙語(yǔ)使用場(chǎng)景）

1、There were different in shape and motility between the both schwann cells after mitosis. ─── 分裂后的子細(xì)胞有形態(tài)和運(yùn)動(dòng)時(shí)相的不同。

2、cells resulted in the formation of micronucleoli after mitosis. ─── 分裂后，前期細(xì)胞內(nèi)的核仁形成微核。

3、bipolar mitosis ─── 兩極分裂

4、homoeotypic mitosis ─── 同型有絲分裂

5、One of two cylindrical cellular structures that are composed of nine triplet microtubules and form the asters during mitosis. ─── 中心體由九個(gè)三聯(lián)體微管組成的兩個(gè)圓柱體細(xì)胞組織之一，在有絲分裂中形成星狀體

6、Human Peripheral blood exposed with tritiated water at variousdoses for 54 hr was examined to observe the chromosome and chromatid abe-rrations at metaphases in the first mitosis of lymphocytes. ─── 將人體外周血在不同劑量的氚水中培養(yǎng)54小時(shí),觀察到淋巴細(xì)胞第一次有絲分裂中期的染色體型及單體型畸變。

7、Abnormality of chromosome behavior occurs from premeiotic mitosis until various stages in meiosis. ─── 從減數(shù)分裂前有絲分裂到減數(shù)分裂的各個(gè)階段，染色體行為都會(huì)發(fā)生異常。

8、nuclei from mitosis went into amitosis without interphase. ─── 來(lái)自有絲分裂的子核進(jìn)入無(wú)分裂期的無(wú)絲分裂。

9、The Phenomena of Mitosis Inside Cell Nucleus of Egg Apparatus Before Flowering in Winter Wheat ─── 普通小麥種內(nèi)卵器開(kāi)花前細(xì)胞核內(nèi)有絲分裂現(xiàn)象

10、Expression of mitosis checkpoint gene CHFR in acute leukemia ─── 急性白血病患者骨髓細(xì)胞CHFR基因表達(dá)及其臨床意義

11、After microspore mitosis, calcium precipitates appeared in the big vacuole of 2-cellular pollen, and then the vacuole disappeared. ─── 在小孢子分裂形成二胞花粉后，在二胞花粉的大液泡中又特異性地出現(xiàn)許多細(xì)小鈣顆粒。

12、There were detestably close synapses between homologous chromosomes during thellateprophase and early metaphase in mitosis of somatic cells. ─── 發(fā)現(xiàn)在其有絲分裂的晚前期、中期階段，咯對(duì)同源染色體都在進(jìn)行聯(lián)會(huì)。

13、CONCLUSION: Down regulation of MAD2 expression of SGC7901 bv sequence-specific siRNA could accelerate the cell growth and impair the mitosis arrest of SGC7901 induced by VCR. ─── MAD2的抑制可使胃癌細(xì)胞SGC7901生長(zhǎng)加速,增殖能力增強(qiáng),同時(shí)減弱紡錘體抑制劑長(zhǎng)春新堿阻滯細(xì)胞周期的作用。

14、The first stage of mitosis, during which the chromosomes condense and become visible, the nuclear membrane breaks down, and the spindle apparatus forms at opposite poles of the cell. ─── 前期階細(xì)胞減數(shù)分裂的第一個(gè)階段，其間染色體濃縮且能被看見(jiàn)，核細(xì)胞膜衰弱，紡錘體在細(xì)胞的相對(duì)紡錘極形成

15、The stage of mitosis and meiosis, following prophase and preceding anaphase, during which the chromosomes are aligned along the metaphase plate. ─── 中期細(xì)胞核的有絲分裂和減數(shù)分裂階段，發(fā)生于前期之后和后期之前，在此期間內(nèi)染色體在中期板平面上定向排列

16、Observation of big and small mitosis and oval cell emergence in regenerated liver tissue after partial hepatectomy ─── 小鼠單純肝切除后再生肝組織內(nèi)大小核分裂相和卵圓細(xì)胞的觀察

17、In early prophase of mitosis and later prophase of meiosis, the chromosomes split lengthwise into two identical chromatids held together by the CENTROMERE. ─── 在有絲分裂前期的開(kāi)始以及減數(shù)分裂前期的結(jié)尾，染色體通過(guò)著絲點(diǎn)形成兩個(gè)完全相同的染色單體。

18、As mitosis proceeds, the spindle microtubules play a crucial role in ensuring that both paired and separated chromatids move in the right directions at the proper times. ─── 在有絲分裂過(guò)程中，是紡錘體微管確保了染色單體在適當(dāng)時(shí)間以正確方向進(jìn)行分離。

19、Cleavage, the major developmental event immediately following fertilization, is a special form of cell division (mitosis). ─── 受精后，立即發(fā)生卵裂，細(xì)胞有絲分裂的特殊過(guò)程。

20、The authors have observed the behaviours at mitosis and meiosis in Lilium davidii var. unicolor which has B-chromosomes. ─── 摘要對(duì)蘭州百合具B染色體的細(xì)胞在有絲分裂和減數(shù)分裂過(guò)程中的行為進(jìn)行了觀察。

21、For over a century, scientists have strived to understand the mechanisms that govern the accurate segregation of chromosomes during mitosis. ─── 一個(gè)多世紀(jì)以來(lái)，科學(xué)家一直努力了解管理機(jī)制，在有絲分裂染色體的精確分離。

22、The cell prepares for meiosis just as it does for mitosis. But as the DNA condenses, each chromosome finds its homologous counterpart. ─── 細(xì)胞減數(shù)分裂的準(zhǔn)備同有絲分裂一樣。但是，隨著DNA的濃縮，每個(gè)染色體都會(huì)與其同源染色體配對(duì)。

23、abnormal mitosis ─── 反常有絲分裂

24、Some of the reconstituted cells were found in different stage of mitosis . ─── 發(fā)現(xiàn)在重組細(xì)胞中有一些是處于有絲分裂的各個(gè)階段。

25、Mammalian Spermatogenesis is a unique cell differentiation process and can be divided into three stages: mitosis, meiosis, and spermiogenesis. ─── 哺乳動(dòng)物的精子發(fā)生是一個(gè)復(fù)雜的細(xì)胞分化過(guò)程，可分為有絲分裂、減數(shù)分裂和精子形成三個(gè)階段。

26、Methods To make the growth curve of eryoleukemia cell, count eryoleukemia cell mitosis index and benzidine staining positive percentage when the eryoleukemia cell were exposed to HMBA. ─── 方法繪制HMBA作用下的紅白血病細(xì)胞生長(zhǎng)曲線,計(jì)數(shù)其分裂指數(shù),聯(lián)苯胺染色法檢測(cè)其分化百分率。

27、If it is a fibromatous tumor, you need to check mitosis and cytologic atypia carefully to see if it is malignant, like fibrothecoma.Malignant fibrous tumor is very few in ovary. ─── 如果它是纖維瘤，你應(yīng)該象纖維卵泡膜瘤一樣，需要認(rèn)真地觀察核分裂和細(xì)胞異型性以判斷它是否為惡性，卵巢惡性纖維性腫瘤非常少見(jiàn)。

28、multipolar mitosis ─── 多極有絲分裂

29、Analysis of Expression of Mitosis Checkpoint Gene Chfr in Bone Marrow Cells of Acute Leukemia Patients ─── Chfr基因在急性白血病骨髓細(xì)胞中表達(dá)的研究

30、anastral mitosis ─── 無(wú)星有絲分裂

31、The process of mitosis is dynamic and continuous but is subdivided into phases to facilitate its study. ─── 絲分裂的過(guò)程實(shí)際上是機(jī)能上連續(xù)不斷的,為了便于研究,通常把它分為幾期。

32、4. Which of the following is not a function of mitosis in humans? ─── 下列哪個(gè)不是人類細(xì)胞有絲分裂的功能?

33、To investigate the role of the human mitotic kinesin-like protein 1(MKLP1) in mitosis and cytokinesis, E. ─── 為探討人源驅(qū)動(dòng)蛋白MKLP1在有絲分裂和胞質(zhì)分裂中的作用,以E。

34、An irregular mitosis is seen in the center. ─── 中央可見(jiàn)病理性核分裂象。

35、Conclusion : The result s indicated that d-tubocurarine is able to inhibit mammal mitosis by blocking the function of nicotinic receptor. ─── 同時(shí),該化合物還具有影響染色體正常分離的潛在能力。

36、a star-shaped structure formed in the cytoplasm of a cell and having raylike fibers that surround the centrosome during mitosis. ─── 在細(xì)胞漿內(nèi)形成的星狀結(jié)構(gòu),在有絲分裂期間有棱形纖維環(huán)繞中心體。

37、the transformation of small lymphocytes into larger undifferentiated cells that are capable of undergoing mitosis ─── 小淋巴細(xì)胞向使其能經(jīng)歷有絲分裂的無(wú)差別的較大細(xì)胞的轉(zhuǎn)變

38、a star-shaped structure formed in the cytoplasm of a cell and having raylike fibers that surround the centrosome during mitosis ─── 在細(xì)胞漿內(nèi)形成的星狀結(jié)構(gòu)，在有絲分裂期間有棱形纖維環(huán)繞中心體

39、Objective: To report a rare phenomena of abnormal mitosis in root tip cells of Allium sativum L. ─── 摘要目的：報(bào)道大蒜根尖細(xì)胞有絲分裂中的異?，F(xiàn)象。

40、Microtubules ;pharmacophore ;Mitosis ;novel ;Psychological inhibition ; ─── 微管 ;

41、one of two cylindrical cellular structures that are composed of nine triplet microtubules and form the asters during mitosis ─── 中心體，由九個(gè)三聯(lián)體微管組成的兩個(gè)圓柱體細(xì)胞組織之一，在有絲分裂中形成星狀體

42、Effects of Artificially Induced Para-nodule on Mitosis and Chromosomal Behavior of Tobacco Root Tip Cells ─── 人工誘導(dǎo)結(jié)瘤對(duì)煙草根尖細(xì)胞有絲分裂及染色體行為的影響

43、Compensatory hypertrophy is a different, temporary growth response in which residual tissue increases in mass and cell number: cells undergo mitosis but do not dedifferentiate. ─── 代償式肥大是一個(gè)不同的，暫時(shí)的生長(zhǎng)應(yīng)答過(guò)程，殘余組織在體積和細(xì)胞數(shù)量上增加：細(xì)胞經(jīng)歷了減數(shù)分裂，但沒(méi)有去分化過(guò)程。

44、Megasporocytes turns into megaspore by meiosis,which develops to male gametophyte after three times of mitosis. ─── 大孢子母細(xì)胞經(jīng)過(guò)減數(shù)分裂，形成功能大孢子，再經(jīng)3次有絲分裂，發(fā)育成雌配子體。

45、During this stage in mitosis and the second division of meiosis the chromosomes uncoil and disperse, the nuclear spindle degenerates, nucleoli reappear, and a new nuclear membrane forms. ─── 在有絲分裂的末期或第二次減數(shù)分裂末期，染色體解聚消失，中心的紡錘體解體，核仁重新出現(xiàn)，新核膜形成。

46、pertaining to the dense specialized portion of a chromosome to which the spindle attaches during mitosis. ─── 關(guān)于一個(gè)染色體上密集的專門的區(qū)域，有絲分裂時(shí)梭形纖維附著于此。

47、The process of mitosis is dynamic and continuous but is subdivided into phases to facilitate its study ─── 絲分裂的過(guò)程實(shí)際上是機(jī)能上連續(xù)不斷的，為了便于研究，通常把它分為幾期。

48、The first stage of mitosis,during which the chromosomes condense and become visible,the nuclear membrane breaks down,and the spindle apparatus forms at opposite poles of the cell. ─── 前期階細(xì)胞減數(shù)分裂的第一個(gè)階段，其間染色體濃縮且能被看見(jiàn)，核細(xì)胞膜衰弱，紡錘體在細(xì)胞的相對(duì)紡錘極形成。

49、Epidermal explant culture was applied, and effects of AK auto Ab with variable dose on rate of epidermaration were observed. Brd U incorporation assay was used to investigate the extent of mitosis. ─── 方法 采用貼壁法體外培養(yǎng)皮膚 ,比較觀察不同濃度 AK auto Ab對(duì)表皮形成速率的影響 ,并采用 Brd- U摻入法測(cè)定各組細(xì)胞增殖率 .

50、pertaining to the dense specialized portion of a chromosome to which the spindle attaches during mitosis. ─── 關(guān)于一個(gè)染色體上密集的專門的區(qū)域，有絲分裂時(shí)梭形纖維附著于此。

51、In the anaphase of mitosis, many chromosome bridges were observed, some acentric fragments of chromosme lagged behind and were left in cytoplasm. ─── 在細(xì)胞分裂后期相中,有較多的染色體橋和無(wú)著絲點(diǎn)染色體落后以至散失在細(xì)胞質(zhì)中的現(xiàn)象。

52、In mitosis each of the chromatids moving toward the poles represents a single complete chromosome. ─── 在有絲分裂過(guò)程中，每個(gè)染色單體大小，形態(tài)上是完全相同的，它們向細(xì)胞相反的兩極移動(dòng)。

53、The X chromosome is shown here in a condensed state, as it would appear in a cell that's going through mitosis. ─── 染色體在這里呈現(xiàn)出濃縮狀態(tài)，如同他在細(xì)胞有絲分裂時(shí)呈現(xiàn)的那樣。

54、A star - shaped structure formed in the cytoplasm of a cell and having raylike fibers that surround the centrosome during mitosis. ─── 星狀體在細(xì)胞漿內(nèi)形成的星狀結(jié)構(gòu)，在有絲分裂期間有棱形纖維環(huán)繞中心體

55、Anaphase The stage in mitosis or meiosis when chromatids are pulled toward opposite poles of the nuclear spindle. ─── 后期:在有絲分裂或者減數(shù)分裂過(guò)程中染色單體分別朝相反的兩極運(yùn)動(dòng)。

56、pertaining to the dense specialized portion of a chromosome to which the spindle attaches during mitosis ─── 關(guān)于一個(gè)染色體上密集的專門的區(qū)域，有絲分裂時(shí)梭形纖維附著于此

57、reductional mitosis ─── 減數(shù)有絲分裂

58、So perhaps it is not surprising that the body puts a cap on mitosis. ─── 因此，身體對(duì)細(xì)胞有絲分裂加以設(shè)限，可能并不讓人感到奇怪。

59、The important signal pathways included mitosis pathways, growth factor pathways, developing pathways and mucin pathways. ─── 如：有絲分裂信號(hào)通路、生長(zhǎng)因子信號(hào)通路、與發(fā)育有關(guān)的信號(hào)通路和黏蛋白信號(hào)通路。

60、premeiotic mitosis ─── 成熟前有絲分裂

61、So the author thinks that the best experiment material is Alliam sativum L. and dyeing material is Gentian Violet (0.2%)in the experiment of the mitosis of the plant cells. ─── 作者認(rèn)為以大蒜作為植物細(xì)胞有絲分裂的實(shí)驗(yàn)材料 ,用 0 .2 %龍膽紫染色 ,實(shí)驗(yàn)效果最佳。

62、Centromeres are the chromosomal domains necessary for faithful chromosome segregation and transmission during mitosis and meiosis in eukaryotes. ─── 摘要著絲粒是真核生物有絲分裂和減數(shù)分裂染色體正確分離和傳遞所必需的染色體區(qū)域。

63、Methods The mouse tail scaled epidermis and the vaginal epithelial in estrus cycle were used to assess the effects of Capsaicin on epidermal keratinization and epithelial mitosis respectively. ─── 方法 采用小鼠尾部鱗片表皮模型和陰道上皮細(xì)胞有絲分裂模型，觀察辣椒素對(duì)表皮細(xì)胞分化及上皮細(xì)胞有絲分裂的影響。

64、The ultraweak bioluminescence r elated to the mitosis and metabolism of a plant sample is strengthened after the sample is illuminated by light. ─── 與有絲分裂和生長(zhǎng)代謝有關(guān)的植物超弱發(fā)光在光誘導(dǎo)下得以加強(qiáng)；

65、In vivo, the lens epithelia located preequatorially on the anterior capsule may undergo mitosis and differentiate into new lens fibers. ─── 摘要于體內(nèi)，座落于水晶體前囊的赤道前部的上皮細(xì)胞能進(jìn)行分裂和分化以形成水晶體纖維。

66、1. AIS. First and the most important one is to rule out AIS. Morphologic features include nuclear atypia, mitosis and apoptotic bodies. ─── AIS原位腺癌：第一個(gè)、也是最需要排除的。形態(tài)學(xué)特征包括：核異型、核分裂和凋亡小體。

67、chromosomes are distributed by spindles in mitosis and meiosis. ─── 在有絲分裂及減數(shù)分裂時(shí)染色體沿紡錘體排列。

68、Keywords Soy isoflavones;Endometrium;Mitosis;Proliferating cell nuclear antigen index; ─── 大豆異黃酮;子宮內(nèi)膜;核分裂率;增殖細(xì)胞核抗原指數(shù);

69、somatic mitosis ─── 體細(xì)胞有絲分裂

70、Keywords Ce（SO4）2;micronucleus test;frequency of micronuclei（ FMN）;mitosis index （Ml）; ─── 微核測(cè)試;微核率;有絲分裂指數(shù);

71、A Report About Abnormal Mitosis in Root Tip Cells of Allium sativum L. ─── 大蒜根尖細(xì)胞有絲分裂發(fā)生異?，F(xiàn)象的報(bào)告。

72、amphiastral mitosis ─── 雙星有絲分裂

73、Aurora kinases play important roles in many events during cell mitosis, such as centrosome maturation and separation, spindle assembly and maintenance, chromosome segregation, cytokinesis and so on. ─── 在細(xì)胞有絲分裂中，極光激酶參與了諸如中心體成熟分離、紡錘體組裝和維持、染色體分離以及胞質(zhì)分裂等多個(gè)事件。

74、Methods: The effect of the gel on the epithelial mitosis and epidermal differentiation was detected using mouse vaginal mucous and mouse-tail as experimental models. ─── 方法:采用鼠尾鱗片表皮和鼠陰道上皮實(shí)驗(yàn)?zāi)Ｐ陀^察蒽林凝膠對(duì)上皮細(xì)胞分裂和表皮細(xì)胞分化的影響。

75、In addition all kinds of abnormal Mitosis behavior were also observed in different ploidy plants.The cause of diversity of chromosome numbers was priliminary analysed. ─── 對(duì)不同倍性苧麻植株分生組織的有絲分裂行為，觀察到三極分裂、不均等分裂和落后染色體等異常有絲分裂現(xiàn)象，并對(duì)造成這種現(xiàn)象的原因作了初步的探討。

76、The two sperm nuclei and the tube nucleus are all derived from a single microspore nucleus by mitosis. ─── 兩個(gè)精核和管核都是從同一個(gè)小孢子核有絲分裂產(chǎn)生的。

77、PRELIMINARY OBSERVATION OF MITOSIS IN THE CEREBELLAR CORTEX NERVE CELL OF RABBIT UNDER EXPERIMENTAL INJURY ─── 實(shí)驗(yàn)性創(chuàng)傷下家兔小腦皮質(zhì)細(xì)胞有絲分裂的初步觀察

78、7.During mitosis, sister chromatids remain joined by their centromere until anaphase. ─── 在有絲分裂期間，姐妹染色單體在分裂后期之前都是通過(guò)著絲點(diǎn)連接的。

79、Ellenberg and his colleagues more than doubled the number of genes that are known to be involved in mitosis, a type of cell division. ─── Ellenberg和他的同事們提高了參與有絲分裂（細(xì)胞分裂的一種類型）基因數(shù)量?jī)杀兑陨稀?/p>

80、Prophase The first stage of cell division in meiosis and mitosis. ─── 前期：細(xì)胞減數(shù)分裂和有絲分裂的第一個(gè)階段。

81、A. During the heart stage mitosis occurs; and during the torpedo stage cytokinesis occurs. ─── 在心的過(guò)程中會(huì)出現(xiàn)階段有絲分裂；并在魚(yú)雷階段細(xì)胞漿移動(dòng)發(fā)生。

82、protozoa intracellular mitosis ─── 原生動(dòng)物細(xì)胞內(nèi)有絲分裂

83、Effects of Three Pretreatment on Mitosis of Root Tip of Albizzia Julibrissin ─── 三種預(yù)處理對(duì)合歡根尖細(xì)胞有絲分裂的影響

84、The normal expression of proto-oncogenes plays an important role in the regulation of spermatogonial mitosis, spermatocyte meiosis as well as spermiogenesis and sperm maturation. ─── 在正常睪丸生精過(guò)程中,原癌基因的正常表達(dá)對(duì)精原細(xì)胞的有絲分裂、精母細(xì)胞的減數(shù)分裂及精子變形、成熟有重要的調(diào)控作用。

85、Tubulin is present in virtually all eucaryotic cells and has a strong relation with cellular mitosis. ─── 事實(shí)上與細(xì)胞有絲分裂密切相關(guān)的微管蛋白幾乎普遍存在于所有真核細(xì)胞中。

86、Methods To draw the MELDS19 cell growth curve, count the MELDS19 cell mitosis index,colony forming test and benziding staining positivity percentage when MELDS19 cell is exposed to HMBA and HMBPA. ─── 方法繪制HMBA單獨(dú)或與HMBPA聯(lián)合作用下的MELDS19細(xì)胞生長(zhǎng)曲線,聯(lián)苯胺染色法檢測(cè)其分化百分率,成集落實(shí)驗(yàn)檢測(cè)細(xì)胞增殖情況。

87、Any of several polypeptides that are produced by a body tissue and that cause the reversible inhibition of mitosis in the cells of that tissue. ─── 抗內(nèi)分泌素，一種由肌體組織產(chǎn)生的，能使該組織細(xì)胞的有絲分裂產(chǎn)生可逆性抑制的多肽。

88、SFN, like the more powerful anticancer agents, interferes with microtubule functioning during mitosis in a similar manner to the more powerful anticancer drugs. ─── SFN像其他藥性更強(qiáng)的抗癌物質(zhì)一樣，干擾了微管在有絲分裂期間的功能，方法也跟其他藥性更強(qiáng)的抗癌藥物類似。

89、Centrosome is a kind of tiny cellular organ, and it plays an important role in the maintenance of cellular polarity and chromosomal segregation during mitosis. ─── 摘要中心體這一微小的細(xì)胞器，在有絲分裂中對(duì)維持細(xì)胞的極性及染色體分離具有重要的調(diào)節(jié)作用。

一個(gè)細(xì)胞周期內(nèi)，DNA復(fù)制在每個(gè)起點(diǎn)只起始一次嗎？

DNA復(fù)制時(shí)可從多個(gè)復(fù)制起點(diǎn)同時(shí)進(jìn)行復(fù)制加快DNA復(fù)制的速度，一個(gè)細(xì)胞周期內(nèi)，DNA復(fù)制一次，所以DNA復(fù)制在每個(gè)起點(diǎn)只起始一次。翻譯是以mRNA為模板合成蛋白質(zhì)的過(guò)程，從起始密碼子開(kāi)始，可以由多個(gè)核糖體從同一個(gè)起始密碼子處開(kāi)始進(jìn)行翻譯合成多個(gè)相同的蛋白質(zhì)分子。

一個(gè)細(xì)胞周期內(nèi)，DNA復(fù)制在每個(gè)起點(diǎn)只起始一次嗎？

一個(gè)細(xì)胞周期內(nèi)，DNA復(fù)制在每個(gè)起點(diǎn)只起始一次

間期又分為三期、即DNA合成前期（G1期）、DNA合成期（S期）與DNA合成后期（G2期）。

1.G1期（first gap）　從有絲分裂到DNA復(fù)制前的一段時(shí)期，又稱合成前期，此期主要合成RNA和核糖體。該期特點(diǎn)是物質(zhì)代謝活躍，迅速合成RNA和蛋白質(zhì)，細(xì)胞體積顯著增大。這一期的主要意義在于為下階段S期的DNA復(fù)制作好物質(zhì)和能量的準(zhǔn)備。

2.S期（synthesis）　即DNA合成期，在此期，除了合成DNA外，同時(shí)還要合成組蛋白。DNA復(fù)制所需要的酶都在這一時(shí)期合成。

3.G2期（second gap）期為DNA合成后期，是有絲分裂的準(zhǔn)備期。在這一時(shí)期，DNA合成終止，大量合成RNA及蛋白質(zhì)，包括微管蛋白和促成熟因子等。 M期：細(xì)胞分裂期。

細(xì)胞的有絲分裂（mitosis）需經(jīng)前、中、后，末期，是一個(gè)連續(xù)變化過(guò)程，由一個(gè)母細(xì)胞分裂成為兩個(gè)子細(xì)胞。一般需1～2小時(shí)。