File:Nematode C. elegans germline chromatin Epigenetic imprint on the paternal X chromosome.jpg
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| Description | Figure 3. Epigenetic imprint on the paternal X chromosome. Adult hermaphrodite gonads and embryos were fixed and stained with anti-H3methK4 (green) and counterstained with DAPI (red). All chromosomes of the mature oocyte stain with anti-H3methK4 (A). This modification (like all others tested: see text) is not detectable in spermatids (B). Upon fertilization, H3methK4 accumulates on all of the sperm-derived autosomes, but is absent from the X chromosome (white arrow) (C). The paternal X chromosome remains refractory to this histone modification even after extensive decondensation (white arrow in D), and multiple rounds of cell division (not shown; Bean et al., 2004). Note that panel C shows a fertilized oocyte shortly after fertilization and during the second meiotic division, while Panel D shows a slightly later staged one-cell zygote during pronuclear fusion. |
| Date | |
| Source | http://www.wormbook.org/chapters/www_germlinechromatin/germlinechromatin.html Schaner, C. E. and Kelly, W. G. Germline chromatin (January 24, 2006), WormBook, ed. The C. elegans Research Community, WormBook, doi/10.1895/wormbook.1.73.1, http://www.wormbook.org. |
| Author | Schaner, C. E. and Kelly, W. G. |
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| current | 15:48, 27 February 2024 | | 1,800 × 723 (352 KB) | Rasbak (talk | contribs) | == {{int:filedesc}} == {{Information |description={{Information |description=Figure 3. Epigenetic imprint on the paternal X chromosome. Adult hermaphrodite gonads and embryos were fixed and stained with anti-H3methK4 (green) and counterstained with DAPI (red). All chromosomes of the mature oocyte stain with anti-H3methK4 (A). This modification (like all others tested: see text) is not detectable in spermatids (B). Upon fertilization, H3methK4 accumulates on all of the sperm-derived autosomes,... |
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