Capturing a Hard-Wired Variability: What Makes Some Identical Twins Noticeably Different? – “The current study finds that only one allele is expressed in between 12 and 24 percent of all such pairs encoded by the mouse genome. Further, the selection of expressed alleles varies randomly from cell to cell, and switches frequently between the two options throughout their lives…. ‘We find that for those genes that are not imprinted, roughly one in five alleles is randomly and dynamically expressed only one at a time,’ says Sandberg. ‘And if one allele is being expressed, the other doesn’t know about it. There’s no coordination between two.’”
meanwhile: Identical twins need never be tried for same crime after DNA breakthrough – “Cases of identical twins being tried for the same crime may never happen again after a scientific breakthrough found there are subtle differences in their DNA.” – h/t Big Daddy Jayman!
Indigenous Groups More Vulnerable in Fight Against Flu – “Research indicated that some Indigenous people such as in Alaska and Australia displayed limited immunity response to the effects of influenza.” – h/t hbd bibliography!
Islands make animals tamer – “Lizard study supports Darwin’s hunch that lack of predators leads to unwatchful behaviour.” – hmmmm.
A Living Time Capsule Shows the Human Mark on Evolution – “Scientists have revived shrimp-like animals that have been buried at the bottom of the lake for an estimated 700 years. If this estimate holds up to further testing, they are the oldest animals ever resurrected…. The oldest DNA the scientists obtained from the lake dates back to around the time the Vandals were ransacking Rome. The scientists found that one genetic strain of water fleas dominated at the time — and continued to until the late 1800s. As phosphorus [from fertilizers] flooded the lake, a previously rare strain emerged and took over.”
Evolution Hidden in Plain Sight – “One of the hallmarks of *Escherichia coli* as a species is that when there’s oxygen around, it can’t feed on a compound called citrate. But one day a flask turned cloudy with an explosion of *E. coli* that were doing just that. The change was so profound that it may mean these bacteria had evolved into a new species.”
SLC24A5 light skin pigmentation allele origin – “‘The distributions of C11 and its parental haplotypes make it most likely that these two last steps occurred between the Middle East and the Indian subcontinent, with the A111T mutation occurring after the split between the ancestors of Europeans and East Asians.’” – @dienekes’.
The brown man with blue eyes – “Interestingly, although the Luxembourg man was blue-eyed, he also had brown skin. He lacked the ‘European’ alleles at all three genes involved in the whitening of European skin.” – from peter frost.
Factor Analysis of Population Allele Frequencies as a Simple, Novel Method of Detecting Signals of Recent Polygenic Selection: The Example of Educational Attainment and IQ [pdf] – “Frequencies of 10 SNPs found to be associated with educational attainment in a recent genome-wide association study were obtained from HapMap, 1000 Genomes and ALFRED. Factor analysis showed that they are strongly statistically associated at the population level, and the resulting factor score was highly related to average population IQ (r=0.90). Moreover, allele frequencies were positively correlated with aggregate measures of educational attainment in the population, average IQ, and with two intelligence increasing alleles that had been identified in different studies.” – h/t elijah! see also jayman.
Ancient hunter-gatherers had rotten teeth – “Scientists have long thought that tooth decay only became common in humans about 10,000 years ago, when we began farming – and eating starchy crops that fed sugar-loving bacteria on our teeth. But Isabelle De Groote of the Natural History Museum in London, UK, and her colleagues have found widespread tooth decay in hunter-gatherers that lived several thousand years before the origin of agriculture.”
The Liberal Illusion of Uniqueness – “[L]iberals underestimate their similarity to other liberals (i.e., display *truly false uniqueness*), whereas moderates and conservatives overestimate their similarity to other moderates and conservatives (i.e., display *truly false consensus*…).” – h/t ben southwood!
More complex brains are not always better: rats outperform humans in implicit category-based generalization by implementing a similarity-based strategy – in some ways, rats are smarter than you. (~_^) – h/t ben southwood!
Why Are Some Types of People More At Risk of Schizophrenia Than Others? – from chris davies.
Is and Ought – from henry harpending.
Is the dark side of parenting genetic? – “In a novel finding, Robert Plomin and colleagues suggest that negative aspects of parenting are more heritable than positive aspects. They call this The Dark Side of parenting. The effect is interesting and subtle: it suggests that whilst parents are generally consistent in their handling of their children, some genetically driven characteristics of their children lead them into more negative parenting styles…. In simple terms, even peaceable parents get irritable with difficult children.” – from dr. james thompson.
Ancient times table hidden in Chinese bamboo strips – “The 2,300-year-old matrix is the world’s oldest decimal multiplication table.”
Unthinkable: Who’s running the show, you or your brain? – “The question of whether the brain is paramount has profound implications for all of us.” – interview w/kevin mitchell.
Changelings, Infanticide and Northwest European Guilt Culture – “To summarize, the changeling lore provides evidence of a NWE guilt culture dating back at least to medieval times, and the practice and attitude towards exposure suggests that ancient Greece had an emerging guilt culture as early as the 400s BC which enabled a similar individualism and intellectual development that we’ve seen in the NWE in recent centuries.” – from staffan.
IamA 15 (nearly 16)-year-old who has co-written a peer-reviewed paper on intelligence. AMA! – elijah armstrong‘s reddit ama! (^_^) (keep in mind that most redditors are idiots. except the ones on r/starwars, of course.)
This is what a beta looks like – from the awesome epigone. hbd-babies everywhere! (^_^)
Ancient cholera mysteriously disappeared – “Strains that plagued Europe and the United States in the nineteenth century were distinct from those prevalent today.”
The social animal – “Whether in education, ethics or politics, we ignore our social natures at our peril.”
Bullied and Badgered, Pressured and Purged – list of the pc-incorrect who have been witch-hunted @handle’s haus.
bonus: The manosphere goes gaga for this woman – the blue pill people don’t like me. they’re prolly just jealous. (~_^)
bonus bonus: Is A Blubbering Inner Party Leftoid Trying To Silence Chateau Heartiste? – the best defense is a good offense!
bonus bonus bonus: Mysterious Microscopic Bubbles Baffle Ocean Scientists – “The most abundant photosynthetic organism in the world [cyanobacteria] sheds countless little sacs into the oceans, which could be having a dramatic impact on marine ecosystems, according to a new study. These microbial buds contain proteins and genetic material, which may influence the growth of other marine microbes and even protect them against viruses.”
bonus bonus bonus bonus: Video: Fish leaps to catch birds on the wing – “Tigerfish swallows swallows after grabbing them out of the air over African lake.” – holy cr*p!
bonus bonus bonus bonus bonus: Dogs Relieve Themselves In-Line With Earth’s Magnetic Field – “Dogs are quite particular about where they choose to relieve themselves — not only do they defecate in direction with the north-south axis, but they also are sensitive to slight changes in the Earth’s magnetic field.”
bonus bonus bonus bonus bonus bonus: War Elephant Myths Debunked by DNA – “Until now, the main question remained: Did Ptolemy employ African savanna elephants (*Loxodonta africana*) or African forest elephants (*Loxodonta cyclotis*) in the Battle or Raphia? ‘Using three different markers, we established that the Eritrean elephants are actually savanna elephants….’”
bonus bonus bonus bonus bonus bonus bonus: Actual Academic Journals Which Could Be Broadway Shows If They Had Exclamation Points Added!
bonus bonus bonus bonus bonus bonus bonus bonus: Science Apologizes to Little Girl for Not Making Dragons – and so they should!!
(note: comments do not require an email. tigerfish. holy cr*p!)