If both of a pair of homologous chromosomes are missing, nullisomy results.
如果一对同源染色体都缺失了,称为缺体。
单词 | Homologous chromosome |
释义 |
Homologous chromosome
英语例句库
If both of a pair of homologous chromosomes are missing, nullisomy results. 如果一对同源染色体都缺失了,称为缺体。 There were detestably close synapses between homologous chromosomes during thellateprophase and early metaphase in mitosis of somatic cells. 发现在其有丝分裂的晚前期、中期阶段,咯对同源染色体都在进行联会。 Diplotene In MEIOSIS, the stage in late PROPHASE I when the pairs of chromatids begin to separate from the tetrad formed by the association of homologous chromosomes. 在减数第一次分裂的前期中的靠后的一个阶段。
原声例句
日常生活医学科普 The process of pairing the homologous chromosomes is called synapsis. 同源染色体配对的过程称为联会。 日常生活医学科普 During prophase 1, homologous chromosomes pair and exchange DNA (homologous recombination) . 在前期 1,同源染色体配对并交换 DNA(同源重组)。 日常生活医学科普 Non-sister chromatids of homologous chromosomes may exchange segments over regions of homology. 同源染色体的非姐妹染色单体可以在同源区域交换片段。 日常生活医学科普 Zygotene Chromosomes approximately line up with each other into homologous chromosome pairs through synaptonemal complex. 偶线期染色体通过联会复合体大致排列成同源染色体对。 日常生活医学科普 Diplotene The synaptonemal complex degrades and homologous chromosomes separate from one another a little. 双线期联会复合体解体,同源染色体开始分离。 日常生活医学科普 Anaphase 1 Kinetochore microtubules shorten, pulling homologous chromosomes, which consist of a pair of sister chromatids, to opposite poles. 后期 1动粒微管变短,将由一对姐妹染色单体组成的同源染色体拉向相反的两极。 日常生活医学科普 However, the homologous chromosomes of each bivalent remain tightly bound at chiasmata, the regions where crossing-over occurred. 然而,每个二价体的同源染色体仍然紧密结合在交叉部位,也就是发生交叉的区域。 Osmosis-遗传 Our 46 chromosomes come in 23 pairs of two homologous chromosomes, which code for the same traits and therefore have similar nucleotide sequences. 我们的46条染色体由23对同源染色体组成;同源染色体编码相同性状,因此具有相似的核苷酸序列。 日常生活医学科普 Metaphase 1 Homologous pairs move together along the metaphase plate: the paired homologous chromosomes align along an equatorial plane that bisects the spindle. 中期 1同源染色体对沿着中期板一起移动:成对的同源染色体沿着将纺锤体一分为二的赤道平面排列。
中文百科
同源染色体同源染色体是在二倍体生物细胞中,形态、结构基本相同的染色体,并在减数第一次分裂(参考减数分裂)的四分体时期中彼此联会(若是三倍体及其他奇数倍体生物细胞,联会时会发生紊乱),最后分开到不同的生殖细胞(即精子、卵细胞)的一对染色体,在这一对染色体中一个来自母方,另一个来自父方。而在同源染色体中,通常不谈x y染色体,X Y染色体主要为部分同源的染色体,通常在谈及时,会将此另外谈论,因为在严格定义下同源染色体主要是在一对的染色体中 ,有同样的大小,形状,基因座,所以在此XY染色体则为不同大小,形状,所以有些书本中,不予认为是同源染色体。
英语百科
Homologous chromosome 同源染色体![]() ![]() ![]() ![]() A couple of homologous chromosomes, or homologs, are a set of one maternal and one paternal chromosomes that pair up with each other inside a cell during meiosis. These copies have the same genes in the same loci where they provide points along each chromosome which enable a pair of chromosomes to align correctly with each other before separating during meiosis. This is the basis for Mendelian inheritance which characterizes inheritance patterns of genetic material from an organism to its offspring parent developmental cell at the given time and area. |
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