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An unusual pairing of homologous X chromosomes occurs during X inactivation. A new study in mouse embryonic stem cells shows that telomeres and the telomeric RNA PAR-TERRA are responsible for additional pairwise interactions that guide Xic-Xic pairing....
5.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. 在减数第一次裂的前期中的靠后的一个阶段。 声明:以上例句、词性类均由互网资源自动生成,部未经过人工审核,其表达内容亦不代表本...
As seen in the figure, step 1 involves the duplication of chromosomes. This is followed by steps 2 and 3, where homologous chromosomes pair up to form tetrads, which undergo crossing over in step 4. The final step, 5, produces four daughter cells with half the number of chromosomes contai...
In which phase of Meiosis 1 does tetrad occur? How are meiosis 1 and meiosis 2 different? What are the two distinct divisions of meiosis? How does metaphase in meiosis I and meiosis II differ? What is the pairing of homologous chromosomes during meiosis?
美 英['tetræd] n.【生】四合子;四个;四个一组的东西;【化】四价元素 网络四分体;四合体;四位组 复数:tetrads 英汉 英英 网络释义 n. 1. 【生】四合子,四分体 2. 四个;四个一组的东西 3. 【化】四价元素 4. 【几】拼四小组
What is formed by spherical bacterial cells occurring in the form of a chain?Bacterial flagella (a) are homologous with eukaryotic flagella. (b) exhibit a rotary motion. (c) consist of a basal body and nine pairs of microtubules. (d) a...
1.a group or series of four 2.the number four 3.Botanya group of four cells formed by meiosis from one diploid cell 4.Geneticsa four-stranded structure, formed during the pachytene stage of meiosis, consisting of paired homologous chromosomes that have each divided into two chromatids ...
Meiotic DSBs can be repaired using homologous chromosomes to generate a crossover . Meiotic crossover is critical for chromosomal segregation and increasing genetic variation. The number of crossovers is limited to one and three per chromosome pair in most plant species. Genetic, epigenetic, and ...
HOMOLOGOUS chromosomesThe ability to examine all chromatids from a single meiosis in yeast tetrads has been indispensable for defining the mechanisms of homologous recombination initiated by DNA double-strand breaks (DSBs). Using a broadly applicable strategy for the analysis of chromatids from a ...