- 更多网络例句与成为四倍相关的网络例句 [注：此内容来源于网络，仅供参考]
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Along with rapid development of bio-technology, artificial chromosome doubling in vitro is the efficiency approach of producing polyploidy plants. Advances on in vitro induction of autotetraploid in plants was reviewed.
随着生物技术的迅速发展，通过植物离体组织人工诱导多倍体已经成为获得多倍体植株的有效途径，本文就植物离体组织染色体加倍诱导同源四倍体的研究进展做一介绍。
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The most disturbing of the Geomancer's power, however, is his ability to separate his being into multiple selves, each as powerful as the original and making him potentially four times the trouble for the unlucky who encounter him.
然而土占师最扰人的能力是他能将自身的存在分离产生多个另体，每个另体的能力都与本体不相上下，让他成为惹上他的倒楣鬼的四倍大的大麻烦。
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Tissue culture was a new and efficient way to obtain tetraploid melon.
组织培养可以成为获得四倍体甜瓜的有效途径。
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With the stable genetic tetraploidy and the fertility in the nature environments, this allotetraploid population presented the key factors to form a new species with 200 chromosomes.
异源四倍体鲫鲤稳定的染色体数目和正常的性腺结构以及自然条件下的生殖传代行为，说明该异源四倍体鲫鲤已成为一个染色体数目为4n=200、遗传性状稳定的新型四倍体鱼群体，具备形成新种所需的关键因素。
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With the stble genetic tetraploidy and the fertility in the nature environments, this allotetraploid population presented the key factors to form a new species with 200 chromosomes.
异源四倍体鲫鲤稳定的染色体数目和正常的性腺结构以及自然条件下的生殖传代行为，说明该异源四倍体鲫鲤已成为一个染色体数目为4n=200、遗传性状稳定的新型四倍体鱼群体，具备形成新种所需的关键因素。
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Transgenic triploid fish can be produced in large scale by crossing transgenic allotetraploid fish with transgenic diploid fish.
湖南师范大学生命科学学院成功的研制了雌雄可育的异源四倍体鲫鲤，并已成为一个种群。
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The velocity of sound in water is 4900 ft Per second ,or more than four times its velocity in air
水中的声速成为每秒4900英尺，比空气中的声速大三倍多（直译则为：……是空气中声速的四倍多
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Yet, with the economy growing at 12 percent, the fastest rate since 1995, and set to overtake Germany as the world's number three economy by the end of the year (although China's economy guzzles four times as much fuel as Germany), some Chinese officials describe the present economic performance as "the best for 5,000 years"!
然而，随着经济增长率达到12%，是1995以来最快的经济增长率，而且将在年底超越德国成为世界第三经济实体(虽然中国经济消耗的能源四倍于德国)，一些中国官员把现在的经济表现说成是&5，000年之未有&！
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If, however, the root cell is one of the rare tetraploid cells (a cell having four sets of chromosomes that arise spontaneously in the root), it may develop into a nodule.
如果这个根细胞是罕见的四倍体细胞（一种在根部自然拥有四套染色体的细胞），它就可能生长成为根瘤。
- 更多网络解释与成为四倍相关的网络解释 [注：此内容来源于网络，仅供参考]
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amphidiploid：双二倍体
如果在杂种的幼苗期将它们的分蘖苗浸在秋水仙素的水溶液中,经过四天左右,就能使部分杂种的染色体数加倍,成为具有56个染色体的小黑麦,兼有小麦和黑麦的全套染色体,叫做异源多倍体或双二倍体(amphidiploid)就能恢复正常结实.
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autotetraploid：同源四倍体
二倍体材料经过秋永仙碱处理后,一些材料细胞的染色体全部加倍,成为同源四倍体(autotetraploid);一些材料二倍体与四倍体细胞并存出现嵌合体(cytochimaeras)现象;一些材料二倍体、四倍体细胞以及更高倍性的细胞混合而形成混倍体.
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Cucurbita maxima：西葫芦
例如二倍体的西葫芦(Cucurbita maxima)本来结梨形果实,成为同源四倍体以后,所结果实却变成扁圆形的.同源四倍体某一同源组的杂合基因型不外乎三种:三式(AAAa) 复式(AAaa)或单式(Aaaa).
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Cynodon：狗牙根属
百慕达草所属的狗牙根属(Cynodon)内包含九个物种,其中以Cynodon dactylon分布的地理区最广,它的染色体的组成属於四倍体,具於相当大的遗传变异,同时其生育周期短,可产生大量的种子,经常成为各地区农田的主要杂草,自然驯化后株型高大,