of the parental genomes. In eukaryotes, sex involves meiosis-mixis-cycles and is tied to reproduction. The prevalence of sexual reproduction in eukaryotes is striking because of the obvious high costs of sex [2]: first, recombination during meiosis breaks up beneficial gene combinations; associated...
The stages of meiosis. Early on (prophase I) chromosomes form a few crossovers to exchange DNA. The process is controlled by proteins including SUMO and ubiquitin. Credit: Ali Zifan, via Wikimedia Commons. Where would we be without meiosis and recombination? For a start, none of us sexually...
Gil-Fernández A, Saunders PA, Martín-Ruiz M, Ribagorda M, López-Jiménez P, Jeffries DL, Parra MT, Viera A, Rufas JS, Perrin N, Veyrunes F, Page J (2020) Meiosis reveals the early steps in the evolution of a neo-XY sex chromosome pair in the African pygmy mouse Mus minutoides...
Thus, these results reveal a role for β-Trcp1 in the control of meiosis. Mitotic Defects and Centrosomal Overduplication in β-Trcp1−/− MEFs To determine whether the meiotic defects observed in germ cells corresponds to a mitotic defect in somatic cells, we used MEFs, where cell cycle...
Early steps of recom... JP Lao,SD Oh,M Shinohara,... - 《Molecular Cell》 被引量: 180发表: 2008年 Meiotic DNA breaks at the S. pombe recombination hot spot M26. We find that M26 stimulates the formation of meiosis-specific double-strand DNA breaks at multiple sites surrounding M26. ...
The X+4 chromosome can thus be regarded as a 'neo-X', and the 1p+4 as a 'neo-Y' chromosome, because of probable lack of recombination in the inverted region. Figure 1 Neo-sex chromosomes of Muntiacus crinifrons. (a) Paring patterns in male and female black muntjacs during meiosis. ...
During meiotic prophase I, telomeres attach to and move on the nuclear envelope (NE), regulating chromosome movement to promote homologous pairing. Meiosis-specific proteins TERB1, TERB2 and MAJIN play a key role in this process. Here, we report the crys
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The four phases of the cell cycle, are coactivated by proteins CBP and p300. These proteins bind to DNA and have a transcriptional function. What Happens During Mitosis? During mitosis, several key steps take place. Prophase, metaphase, anaphase, telophase, and cytokinesis all make up the phas...
aculeatusChr12 in the male meiosis of the F2cross between a WE female and an EE male (Fig.2e). In contrast, such recombination suppression is not found in the female meiosis of this cross or in the female or male meiosis of the reciprocal F2cross, where the orientation of the inversion...