Sandwalk

                                    Strolling with a skeptical biochemist

Wednesday, December 31, 2025

The activity of "random" DNA supports the junk DNA model

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I complain a lot about the quality of science writing but today's post is very different. I want to highlight an article by Michael Le P...
6 comments:
Sunday, December 28, 2025

The scary future of AI is revealed by how it deals with junk DNA

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Today I did a Google search for the term "JUNK DNA" and, as usual, the first thing I saw was the Google AI description of junk DNA...
11 comments:
Friday, December 19, 2025

How many lncRNA genes in the human genome? (2025)

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There is considerable controversy over the total number of genes in the human genome. The number of protein-coding genes is pretty well esta...
36 comments:
Thursday, December 11, 2025

How many regulatory sites in the human genome?

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The current best model of the human genome is that only 10% is functional and 90% is junk. This model was first developed over half a centur...
7 comments:
Monday, November 24, 2025

Evolution explains the differences between the human and chimpanzee genomes

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If you align similar regions of the human and chimpanzee genomes they turn out to be about 98.6% identical in nucleotide sequence. The total...
40 comments:
Tuesday, October 21, 2025

Google AI references a "Biblical Genetics" video in claiming that junk DNA is no longer considered junk

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90% of the human genome is junk DNA. Today I did a routine search for "junk DNA" "2025" to see if misinformation i...
123 comments:
Thursday, September 25, 2025

Wednesday talk at the University of Toronto: Larry Moran on "What's in Your Genome"

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I'm giving a talk next Wednesday (October 1st) to the members of the Senior College (retired faculty). It's at the University of Tor...
13 comments:
Monday, July 21, 2025

Endogenous retrovirus sequences can be transcriptionally active: the reality vs. the hype

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A recent paper on characterizing endogenous retrovirus sequences has attracted some attention because of a press release from Kyoto Universi...
24 comments:
Saturday, July 19, 2025

The genes for all seven of Mendel's traits have now been identified

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The seven traits that Gregor Mendel worked with were: seed shape (R/r), cotyledon color (I/i), seed and flower color (A/a), pod shape (V/v...
11 comments:
Thursday, July 17, 2025

Predatory journals are helping to spread misinformation in the scientific literature

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At the end of last year (2024) I posted an article about distinguished molecular biologist William Hasletine who published an article in Fo...
10 comments:
Friday, May 23, 2025

An editorial in "Nature Reviews Genetics" misrepresents alternative splicing

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The transcripts of some genes can be alternatively spliced to produce more than one biologically functional product (e.g. proteins). There a...
37 comments:
Thursday, May 22, 2025

Is AI really "intelligent"? Here are 13 biology questions to test the latest AI algorithms.

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Last night I attended a talk by Chris DiCarlo who warned us about the dangers of AI. I'm sure he's right to be worried but I'm s...
35 comments:
Monday, May 19, 2025

A new higher mutation rate in humans includes indels in repetitive DNA regions

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Theme Mutation -definition -mutation types -mutation rates -phylogeny -controversies There are three ways of estimating the human m...
14 comments:
Tuesday, May 06, 2025

L'ADN poubelle: Junk DNA

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This is a podcast in French on the topic of junk DNA. The moderator is Thomas C. Durand of La Tronche en Biais , a YouTube channel that focu...
7 comments:
Sunday, May 04, 2025

Current Trump tariffs

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Here's a list of the current Trump tariffs taken from Wikpedia . It's important to remember that there's a 10% tariff on every c...
5 comments:
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