Plants Use Hourglass Mechanism

Plants need to know when to flower and produce seed.  They can read the sunshine, but what about plants living in shade or cloudy conditions?  It turns out they have two mechanisms for telling time: a light meter and an hourglass.  If the light meter doesn’t switch on, the hourglass lets the plant know it […]

DNA Translator More Complicated Than Thought

One of the most remarkable molecular machines in your body, the ribosome, is coming to light, nanometer by nanometer, as scientists find new ways to peer into the inner workings of the “black box.”     Science Daily reported on work at Berkeley that has given the clearest imagery yet.  “Ribosomes, which number in the […]

Protein Function: It’s All in the Fold

Most chemical reactions involve atoms or molecules bumping into one another and exchanging electrons.  Proteins, by contrast, derive their immense functional repertoire from their shapes.  Several recent studies explore the amazing potential for strength, motility and catalysis that derives from the way proteins fold. Clots:  A picture of fibrin graces an article in Science Daily.  […]

Did Evolution Create Genetic Proofreading?

Protein manufacture in the cell is such a critical operation, there are numerous error-checking mechanisms the cell uses to get it right.  One of the most amazing is the careful association of DNA codons with amino acids, and the “proofreading” or “spell checking” that ensures fidelity.  How could spell checking evolve?     Science Daily […]

Epigenetics Rising in Consciousness of Geneticists, Embryologists

The old story of genetics was that all the information is in genes, and when sperm and egg unite, it’s only the combination of genes from parents that affect the offspring.  That view has been under challenge for years now as geneticists and embryologists find more and more evidence for additional heritable factors that affect […]

Selfish Gene Mutates, Dies a Metaphorical Death

Richard Dawkins proposed in his book The Selfish Gene that a gene, being the target of natural selection and unit of replication, is the entity most likely to get passed on to posterity; as such, it is “selfish” in that the rest of the organism is really only incidental to its immortality.  Dawkins expanded this […]

Nanotech Blurs Line With Biophysics

Machines on the molecular scale – in the literature these days, one needs to dig to find whether a news article is talking about man-made machinery or the living cell.  Both employ laws of physics to do work.  Notice how seamless the connection is in the following examples. Kinesin tightrope walk:  Scientists at Northwestern University […]

Biological Big Bang: Another Explosion at the Dawn of Life

Eugene Koonin and two friends from the NIH went tree-hunting.  They examined almost 7,000 genomes of prokaryotes.  They found trees all right – a whole forest of them.  They even found 102 NUTs (nearly universal trees) in the forest.  Unfortunately, it’s not what they wanted to find: a single universal tree of life that Darwin’s […]

More Going On in the Brain Than We Realize

The news story about a girl who can see in both eyes with half a brain has stunned neurophysiologists (see New Scientist and Live Science).  Somehow, the remaining parts of her brain underwent a massive reorganization of the circuits involved in vision.  “It was quite a surprise to see that something like this is possible,” […]

Systems Biology Oddly Silent About Darwin

Two papers on the rise of “systems biology” appeared in Nature last week.  Both are astounded by the complexity of the cell, but neither had anything to say about evolution, Darwin, or phylogeny – mildly surprising when the proponents of evolution keep saying that “nothing in biology makes sense except in the light of evolution.” […]

Warning: Do NOT Mutate This Protein Complex

In each cell of your body there is a complex of 8 or more proteins bound together called the BBSome.  This protein complex, discovered in 2007, should not be disturbed.  Here’s what happens when it mutates: “A homozygous mutation in any BBSome subunit (except BBIP10) will make you blind, obese and deaf, will obliterate your […]

How Cells Proofread DNA Is Still Mysterious

An amazing fact about DNA transcription is that the machinery not only copies DNA onto RNA, but checks it for errors.  A story in Science Daily says that researchers would expect 100 times more errors statistically than the actual results of transcription in the cell.     One of the mechanisms revealed in more detail […]

Cells Use Cloud Computing

“Cloud computing” is the up-and-coming trend in information technology.  It allows processes to run in parallel on multiple networked processors with more robustness, because other processors can pick up the slack if a major server fails.  Scientists are finding that cells have been using this technology all along.     Science Daily reported on work […]

Darwinizing Sex Causes Pain

Sex brings pleasure to many, but pain to Darwinists.  Why?  Because they can’t figure it out.  Nick Lane is a case in point.  In New Scientist, he wrote, Sex is the ultimate absurdity.  Forget the hormonal rushes, the sweat and the contorted posturing.  Forget about the heartache, the flowers, the bad poems and the costly […]

Animals Become Tame with Minor Genetic Changes

“In what could be a breakthrough in animal breeding, a team of scientists from Germany, Russia and Sweden have discovered a set of genetic regions responsible for animal tameness,” began a report in Science Daily.  Groups of tame rats and aggressive rats were bred separately, then mated.  Scientists identified genetic regions responsible for the different […]
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