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action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /home4/scienrds/scienceandnerds/wp-includes/functions.php on line 6114Source:https:\/\/www.quantamagazine.org\/to-defend-the-genome-these-cells-destroy-their-own-dna-20230926\/#comments<\/a><\/br> Marie Delattre was studying the sexual reproduction practices of microscopic worms when she noticed something unexpected. Under the microscope, an embryo of the nematode Mesorhabditis belari<\/i> was dividing as it should, progressing from one cell to two to four. But inside a few cells she saw an inexplicable spray of DNA fragments floating around where they didn\u2019t belong.<\/p>\n \u201cThere was DNA everywhere, inside the nuclei and outside the nuclei \u2014 big chunks of DNA,\u201d she said. \u201cI thought it was a dead embryo.\u201d<\/p>\n The embryo was not dead, but it was doing something that usually only dead cells do: destroying its genome. \u201cI started to try to trace when these fragments appear, at what stage, and what they look like,\u201d said Delattre<\/a>, a cell biologist at the \u00c9cole Normale Sup\u00e9rieure in Lyon. \u201cThat\u2019s how I figured out that this is not accidental. All the embryos did this.\u201d<\/p>\n
\nTo Defend the Genome, These Cells Destroy Their Own DNA<\/br>
\n2023-09-27 21:58:19<\/br><\/p>\n