Path: Xl.tags.giganews.com!local-2.nntp.ord.giganews.com!nntp.supernews.com!news.supernews.com.POSTED!not-for-mail NNTP-Posting-Date: Mon, 13 May 2024 14:15:39 +0000 From: John Larkin Newsgroups: sci.electronics.design Subject: Re: OT: Dynamic DNA structures and the formation of memory Date: Mon, 13 May 2024 07:13:48 -0700 Organization: Highland Tech Reply-To: xx@yy.com Message-ID: References: <77r24jloc6k59o98o9nb47j8ul3n3ngh6a@4ax.com> X-Newsreader: Forte Agent 3.1/32.783 MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Lines: 66 X-Trace: sv3-rkCM5Lx/xOwN6dM6LGvTHGil1dU/+MLPVI406/0A0KSiin5S9dQoZzrHv4CoUBWXMzSqeqFYeb8un6E!n1TxUgYtNANswcAJyMnhh5ih6zGBGEK5yv7ko3csOeO+tHU7MTAx+584jCf/UXMlsgge4y1Jpt4B!5/qWdQ== X-Complaints-To: www.supernews.com/docs/abuse.html X-DMCA-Complaints-To: www.supernews.com/docs/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: 4135 On Mon, 13 May 2024 09:54:25 -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. Lamark claimed that it could be done >very quickly, in the lifetime of one woman, versus over generations >(where DNA controls). Actually, Lamark was focused on Wheat, >specifically can one train wheat to grow in Siberia; this was very >attractive to Stalin. Turns out you cannot. > >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 Classic evolution, random mutation and selection, is absurdly inefficient. Why wouldn't species use something better? Because the scientific establishment doesn't approve?