Variations

Science fiction, not theories, predicts facts

The past is not the key to the present

Electric fields affect wing movement, leading to agitation and changes in brain chemistry Excerpt: The effect on the wings being moved seems to agitate the flies, as revealed by changes in their brain chemistry. Flies exposed to an electric field…
Read more

“Evolution” of two sexes?

social interaction and brain

Selection for mitochondrial quality drives the evolution of two sexes with germline Topics included (among others): CORRELATION BETWEEN ANIMAL DEVELOPMENT AND MITOCHONDRIAL EVOLUTION THE MODEL: SIMULATION, MATHS TOO COMPLICATED TO SOLVE Mt VARIATION BETWEEN GAMETES MAKES SOMATIC GAMETOGENESIS ADVANTAGEOUS IN…
Read more

RNA-mediated “repurposing” is nutrient-dependent and pheromone-controlled

rp_poster-from-jesse.jpg

 Evolutionary resurrection of flagellar motility via rewiring of the nitrogen regulation system Excerpt: The fast-spreading strain AR2F had acquired an additional point mutation in the σ54-dependent EBP gene ntrC, which alters an amino acid (R442C) within the DNA binding domain…
Read more

Helen Fisher: Love is an addiction

neuronal-plasticity

In the Brain, Romantic Love Is Basically an Addiction By Helen Fisher | February 13, 2015 11:43 am Excerpt 1) Scientists have now shown that food, sex, and gambling compulsions employ many of the same brain pathways activated by substance…
Read more

The biologically-based origin of the mammalian placenta

The past is not the key to the present

Summary: In this open access journal article, Gunter Wagner’s group eliminates assumptions about mutations and ends the obfuscation of biologically-based cause and effect. Experimental evidence links ecological variation via non-living viruses to ecological adaptations manifested in the biodiversity of morphological…
Read more

An epigenetic trap (the sequel)

rp_poster-from-jesse.jpg

I will post this “sequel” before the “prequel” about light-induced amino acid substitutions because more attempts are being made to deny that the fact my colleagues and I detailed how epigenetic traps links the morphology and behavior of species from…
Read more

Constrained evolution is ecological adaptation

translocated chromosome

See also: Unconstrained evolutionary innovability Ideas that evolution is not constrained can be compared to experimental evidence of biophysically constrained ecological adaptations. The most recent relevant open access published work from the Jakobsson lab is: TRIM28 Represses Transcription of Endogenous…
Read more

A single amino acid substitution differentiates cell types of E. coli

Genetic code

Rare amino acid influences E. coli infection Excerpt: “They found that E. coli O157 is unable to attach itself to host tissue in high concentrations of D-Serine. Other strains, such as those that cause meningitis, thrive in the presence of…
Read more

Unconstrained evolutionary innovability

terrarium eco system

The Strange Inevitability of Evolution by Philip Ball Excerpt 1)  Natural selection supplies an incredibly powerful way of pruning variation into effective solutions to the challenges of the environment. But it can’t explain where all that variation came from. As…
Read more