Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Bill Sloman Newsgroups: sci.electronics.design Subject: Re: OT: Dynamic DNA structures and the formation of memory Date: Mon, 13 May 2024 12:39:15 +1000 Organization: A noiseless patient Spider Lines: 48 Message-ID: References: <77r24jloc6k59o98o9nb47j8ul3n3ngh6a@4ax.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Date: Mon, 13 May 2024 04:39:16 +0200 (CEST) Injection-Info: dont-email.me; posting-host="94f0f64ffe6556e838ede627a1f17149"; logging-data="3400691"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/XSFh1ghG82lHE0jNYYNa1uW/7Ljj3F5E=" User-Agent: Mozilla Thunderbird Cancel-Lock: sha1:q7zHPnH1E34Puie18w95cjxw/2Y= Content-Language: en-US In-Reply-To: <77r24jloc6k59o98o9nb47j8ul3n3ngh6a@4ax.com> Bytes: 3102 On 13/05/2024 11:30 am, 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. That's why humans invented language - and, much later, writing. John Larkin is fond of magical thinking, which is to say he doesn't seem to be able to think in any kind of useful way. -- Bill Sloman, Sydney