Path: Xl.tags.giganews.com!local-1.nntp.ord.giganews.com!news.giganews.com.POSTED!not-for-mail NNTP-Posting-Date: Mon, 13 May 2024 14:39:59 +0000 From: Joe Gwinn Newsgroups: sci.electronics.design Subject: Re: OT: Dynamic DNA structures and the formation of memory Date: Mon, 13 May 2024 10:39:58 -0400 Message-ID: References: <77r24jloc6k59o98o9nb47j8ul3n3ngh6a@4ax.com> User-Agent: ForteAgent/8.00.32.1272 MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Lines: 68 X-Usenet-Provider: http://www.giganews.com X-Trace: sv3-r9NTWwpK71ZRMfArdcBcpViSjKa7OGiXj8F3Xyrvf1vNH3g845hxSVyWre5lBB+BuuoXu7dVeXgcsID!nsahwQr7G5H7vhKOMfpZhfSYQei/40XI3SEpKxsgth0ECvgZBsrO0nVKCge26q0bCw2oGvo= X-Complaints-To: abuse@giganews.com X-DMCA-Notifications: http://www.giganews.com/info/dmca.html X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly X-Postfilter: 1.3.40 Bytes: 4085 On Mon, 13 May 2024 09:54:26 -0400, Joe Gwinn wrote: >On Sun, 12 May 2024 18:30:32 -0700, John Larkin > wrote: > >>On Sun, 12 May 2024 21:21:56 -0400, "Tom Del Rosso" >> wrote: >> >>>John Larkin wrote: >>>> On Sun, 05 May 2024 05:36:06 GMT, Jan Panteltje >>>> wrote: >>>> >>>>> Dynamic DNA structures and the formation of memory >>>>> https://www.sciencedaily.com/releases/2024/05/240501125755.htm >>>>> Summary: >>>>> An international collaborative research team has discovered that >>>>> G-quadraplex DNA (G4-DNA) accumulates in neurons and dynamically >>>>> controls the activation and repression of genes underlying long-term >>>>> memory formation. >>>>> >>>>> >>>>> >>>>> I have always though that memory could be stored as DNA sequenxes... >>>> >>>> More likely RNA or some other protein. >>>> >>>> The oft-mocked Lamarckian concept, of genetic learning (not just >>>> natural selection) is probably real, and some reverse transcription >>>> does happen, namely that DNA is edited within the life of one >>>> organism. But remembering where you left your glasses is probably >>>> handled at a lower level than editing your chromosones. >>> >>>But how can it be passed down as Lamarck thought, if the eggs in the >>>ovaries are formed early? If genetic memory could be passed down it >>>would be only from the father because sperm are formed recently. But the >>>sperm spawn from local cells. If DNA is edited to store memory then >>>would these changes be duplicated in all cells in all tissues? How else >>>would the changes get into sperm cells? How could they get into eggs? >>> >> >>If it is advantageous for a woman's life experiences to be passed onto >>her children, nature will find a way. > >Yes, but that is not the issue. Lamarck claimed that it could be done >very quickly, in the lifetime of one woman, versus over generations >(where DNA controls). Actually, Lamarck was focused on Wheat, >specifically can one train wheat to grow in Siberia; this was very >attractive to Stalin. Turns out you cannot. In Stalin's day, it was Lysenko who sold Lamarckism to Stalin. Pretty well destroyed Russian Biology, which never really recovered. .. Joe Gwinn >But there is a twist. There was a study of the effect of mass >starvation of the Swedish population which showed that one could >detect the effect of starvation of grandfathers on their >grandchildren. It is thought that this is mediated by epigenetic >information carried in methyl tags on the DNA, but I don't know if >that was ever sorted out. "Överkalix study": > >. > >Joe Gwinn