Plants

An epigenetic trap (the prequel)

See also: An epigenetic trap (the sequel) Excerpt: “Support for the link from one epigenetic trap to cell type differentiation was included in the molecular epigenetics section of our 1996 review, which detailed how RNA-mediated chromatin remodeling occurs.” My comment: One epigenetic trap leads to the de novo creation of olfactory receptor genes and cell type differentiation. See also: Heterochromatin-mediated gene silencing facilitates the diversification of olfactory neurons. The first epigenetic trap links the sun’s biological energy to cell type…

Read More

Atheism: Arrogant, useless, and divisive ignorance

Scientific Seeker Stuart Kauffman on Free Will, God, ESP and Other Mysteries By John Horgan | February 4, 2015 Excerpt: Horgan: What do you make of the antipathy toward religion expressed by Richard Dawkins and other “New Atheists?” Kauffman: … moral behavior requires no belief in God. Morality probably evolved in Paleolithic to some extent. But to dismiss those who do believe in God, in any sense, is arrogant and useless and divisive. Excerpt: We need accelerating expansion of universe for…

Read More

Beneficial microbes kill beneficial mutations

Microbiology: Here’s looking at you, squid Margaret McFall-Ngai has dissected the relationship between a beautiful squid and its live-in bacteria — and found lessons for microbiome research on the way. Ed Yong 14 January 2015 Excerpt: “We now know that microbes make up the vast diversity of the biosphere, and that animal biology was shaped by interacting with microbes,” she says. “In my mind, this is the most significant revolution in biology since Darwin.” My comment: I agree. Darwin’s works…

Read More

We need pattern recognition, not a prologue

Prolegomenon “a preliminary discussion…; a prologue.” “… we need a mapping from genotype to phenotype, from phenotype to what is selected, and from what is selected to the new genotype (Lewontin, 1961). — cited in Prolegomenon to patterns in evolution Excerpt:  “…we cannot derive what selection, acting at the level of the whole organism in its world, will “select” among the possible but unprestatable…” My comment: Organisms naturally select the nutrients that enable thermodynamic cycles of protein biosynthesis and degradation,…

Read More