The polymorphy of fronds and chromosome number of Ophioglossum petiolatum Hook.
有梗瓶尔小草叶的多形性和染色体数目.
| 单词 | chromosome number |
| 例句 |
英语例句库
The polymorphy of fronds and chromosome number of Ophioglossum petiolatum Hook. 有梗瓶尔小草叶的多形性和染色体数目. In plants this is sometimes overcome by the doubling of the chromosome number, giving an allopolyploid. 在植物中，这种不育现象有时可因为染色体数目加倍而抵消，产生同源多倍体。 In contrast to homoploid hybrid species,polyploid species are easily diagnosed because of chromosome number changes associated with genome doubling. 与同倍杂合体物种相比，因为与基因组加倍相关的染色体数目的变化,多倍杂合体物种很容易判断。 Euploidy The normal state in which an organism's chromosome number is an exact multiple of the haploid number characteristic of the species. 正常状态下，生物体染色体数是此种生物单倍体数目整数倍的现象被称为整倍性。 声明：以上例句、词性分类均由互联网资源自动生成，部分未经过人工审核，其表达内容亦不代表本软件的观点；若发现问题，欢迎向我们指正。
原声例句
TED演讲（视频版） 2020年4月合集 What this means is that one of the two copies of chromosome number 15 that I have in each of my cells has a genetic mutation. 这意味着我每个细胞中的 15 号染色体的两个副本中的一个有一个基因突变。 我们为何讲话 Speech 1 was located on chromosome number 7 but where exactly on chromosome number 7 and which particular gene was it, was something that would have required several more years of investigations until the actual gene was detected. " 说话一号" 位于七号染色体，但具体在七号染色体的哪个部位呢，到底是哪个基因呢，这就需要更多年的调查研究才能找出真正的基因所在。 15篇文章贯通六级词汇 Normally, each egg and sperm cell contains 23 chromosomes, and, when they unite, 23 pairs or 46 in total. Occasionally, an accident occurs when the egg or sperm cell is forming, creating an extra chromosome number 21. 正常情况下，每个卵子和精子细胞包含 23 条染色体，当它们结合时，共有 23 对或 46 条染色体。偶尔，当卵子或精子细胞形成时会发生意外，从而产生额外的 21 号染色体。 |
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