Origins Thread

[Tiger]

Blind Cavefish: Evolutionary Icon, or an Example of Preprogrammed Adaptation? - by Emily Reeves

Blind Cavefish: Evolutionary Icon? | Evolution News

There is another model that could explain the transformations of the cavefish. This model is called continuous environmental tracking and it is design-based.

evolutionnews.org

However, there is another model that could explain the transformations of the cavefish. This model is called continuous environmental tracking (CET) and it is design-based. The model presupposes that organisms actively track conditions within specific environments and self-adjust based on predesigned adaptation trajectories. Similar to human engineered agile systems, organisms can make internal changes within a range in response to external changes. This model posits: ...

 

[Tiger]

So flagella is so common and simple that it originated independently in bacteria and archaea?

https://www.cell.com/cell/fulltext/S0092-8674(22)00996-5?_returnURL=https%3A%2F%2Flinkinghub.elsevier.com%2Fretrieve%2Fpii%2FS0092867422009965%3Fshowall%3Dtrue&fbclid=IwY2xjawEUmPlleHRuA2FlbQIxMQABHWc2Tgxb0dRLnKYnHW4H_flyRxZt3LBiNDFJMeVW023vHmZJqa7sn4EXPg_aem_Ydj3gHV0IlODKjoPKhkkAQ

 

[Tiger]

No random mutations, no imaginary selection
Bacteria Quickly Fix a Faulty Motor by Rearranging DNA - In a couple of days.


The ability of bacteria to quickly reconfigure their genomes to restore flagellar function exemplifies the profound intelligence inherent in biological design. These processes are far too intricate and rapid to be the product of random mutations and slow evolutionary pressures. Instead, they reveal a purposeful and highly organized approach to genetic information management, affirming the concept of intelligent design.

This discovery not only challenges the traditional evolutionary paradigm but also provides a deeper understanding of the remarkable capabilities embedded within the DNA's passive, yet meticulously organized information library.

The rapid genetic changes observed in bacteria serve as a testament to the inherent intelligence and foresight embedded in the blueprint of life.

No random mutations, no imaginary selection

DNA rearrangement, bacterial motors

sciencerefutesevolution.blogspot.com

 

[Myles O'Reilly]

Tiger I don't understand your obsessiveness with this topic.

 

[Tiger]

Tiger I don't understand your obsessiveness with this topic.

That’s understandable Myles.

 

[Tiger]

Queen bees and worker bees are genetically identical organisms. They become two different life forms because the queen eats 'royal jelly'. The same principle is seen in humans.


It's an intricate balanced system where genes are coded themselves by other sources of information

What you eat can reprogram your genes

The latest evidence suggests that food “talks” to our genome, which is the genetic blueprint that directs the way the body works.

bigthink.com

 

[Tiger]

View: https://www.youtube.com/watch?v=AuWRkRseF2c

 

[Tiger]

DNA “grammar” discovered!

DNA is considered the language of life and has bases that we often refer to as letters. In genes, the letters make up 3 letter words (codons) that code for amino acids. When the DNA of a gene is “read” (or transcribed and translated) the amino acids make a protein which has a specific structure and function. Of course, all these processes are highly regulated! You have the same DNA in brain cells and liver cells, but you want brain cells to produce brain proteins and liver cells to produce liver proteins.

It appears an important part of that regulation is “spatial grammar.” The activity of transcription factors (proteins that turn genes “on or off”) depends on the location of their binding site relative to the gene. We used to think transcription factors (TFs) acted as only activators OR repressors, but it turns out their activity is based on SPACING in the DNA sequence. The article linked in this post stated, “this research shows the function of transcription factors is far more complex.”

Exactly! Far more complex than anyone would imagine something that supposedly came about by random chance over eons of time. There are layers and layers of information that we continue to discover.

Scientists discover new code governing gene activity

A newly discovered code within DNA—coined "spatial grammar"—holds a key to understanding how gene activity is encoded in the human genome.

medicalxpress.com