‘Superblack’ bird of paradise feathers absorb 99.95% of light
In 200 Years Cows May Be the Biggest Land Mammals on the Planet
Researchers have found evidence of rapid and involuntarily mental processes that kick-in whenever we encounter opinions we agree with.
Having an audience might make you perform better, study finds - Johns Hopkins neuroscientist discovers that performing a task in front of an audience triggers part of the brain associated with action and motor skills
Perturbation of the circadian rhythm is a hallmark of cancer and chronic circadian rhythm disruption predisposes individuals to tumour development. Nowresearchers show that drugs that stimulate the circadian cloc are selectively lethal to a wide range of cancer cells.
U.K. Man With 'Worst Ever' Drug-Resistant Gonorrhea Is Now Cured
Cognitive deficits of adolescent cannabis use are smaller than thought previously; abstinence longer than 72 hours diminishes them further
Researchers illuminate the path to a new era of microelectronics: New manufacturing process will enable photonic communication in consumer devices
Study identifies brain areas altered during hypnotic trances
Sometimes called “wear and tear” arthritis, osteoarthritis in people who are obese was long assumed to simply be a consequence of undue stress on joints. But researchers provide the first evidence that bacteria in the gut – governed by diet – could be the key driving force behind osteoarthritis.
"Sea Nomads" May Have Evolved to Be the World's Elite Divers
"Global trove of rare earth metals found in Japan’s deep-sea mud"
UCI researchers identify blood biomarkers that may help diagnose, confirm concussions - Researchers have found that specific small molecules in blood plasma may be useful in determining whether someone has sustained a mild traumatic brain injury (mTBI), commonly known as a concussion.
A tooth-mounted sensor can track when patients consume glucose, salt, and alcohol. The 2-mm-by-2-mm device can then send data to smartphones and the like, according to a new study from Tufts.
Certain PTSD therapies prove effective long after patients stop treatment. The findings suggest effective and lasting approaches for symptoms of PTSD-a debilitating and typically chronic disorder that rarely diminishes spontaneously and is associated with significant distress, impairment
Tiny microenvironments in the ocean hold clues to global nitrogen cycle
Religious individuals with high scientific reasoning ability are not more likely to accept biological evolution as true, according to new research
I’m Francis Collins, Director of the National Institutes of Health. As we celebrate the 15th anniversary of the completion of the Human Genome Project, I’m here to talk about its history and the critical role it has played in precision medicine. Ask me anything!
Ejaculation Induced by the Activation of Crz Neurons Is Rewarding to Drosophila Males
By passively monitoring user-generated data from medical cannabis patients, researchers have glimpsed the types and amounts of marijuana that seem effective for relieving symptoms of stress, anxiety, and depression, as reported in the Journal of Affective Disorders.
Diamonds. We all thought that they are pretty strong. But now they can be bent and stretched.
Desiccation cracks provide evidence of lake drying on Mars
Earlier time to aerobic exercise is associated with faster recovery following acute sport concussion
Researchers discover Autistic children inherit rare damaging noncoding variants from fathers but not mothers
When There’s an Audience, People’s Performance Improves
Salk scientists curb growth of cancer cells by blocking access to key nutrients through control of circadian clock.
Seroprevalence of Toxoplasma gondii in pregnant women and livestock in the mainland of China: a systematic review and hierarchical meta-analysis
Researchers have characterized a complex, little-understood receptor type that, when activated, shuts off hunger. The findings may open up opportunities to fight obesity at the cellular level.
A research study explaining that children even before their teenage years may have a distorted perception of body image and a subjective perspective of what is an acceptable body type.
Graphene Sets a New Record on Squeezing Light to One Atom
Large portions of Canada’s vast boreal forest could be at risk of dying off by the end of the century, as climate change will dramatically aggravate the risk of wildfires, drought and insect infestations, say government scientists in a groundbreaking new study.
Children With Autism Have Gastrointestinal & Immune-System Deregulation Research Finds
New Study Says Ancient Humans Hunted Big Mammals To Extinction
Clear as mud: Desiccation cracks help reveal the shape of water on Mars
An Affirmative Action Leg Up May Hurt Your Chances to Become a Doctor, Scientist or Engineer
A rare mutation among the Bajau people lets them stay underwater longer: natural selection at the PDE10A gene has increased spleen size in the Bajau, providing them with a larger reservoir of oxygenated red blood cells.
Carbapenem-resistant superbugs curbed by existing bismuth subcitrate metallodrug
Google Suggests the Future of Hardware and Technology Is “Softwear”
A breathtaking new type of opal has been found... in common seaweed
Half the Coral in the Great Barrier Reef Has Died Since 2016 (paper sourced in article)
199 prince_harming As best I can tell, yeasts are the only organisms to produce ethanol (and CO2) as the primary end product of metabolism. Some others do, but in lower quantities, and mixed with other, much less appealing compounds. Given the huge impact alcohol has had on human civilization over the millennia, it's hard to imagine how things would have turned out if this stuff never came along. I find it interesting, though, that in most of the Chinese cuisine with which I am familiar, yeast-leavened breads seem to be conspicuously absent.
32 [deleted] [removed]
21 FortuitousAdroit [doi:10.1038/s41586-018-0030-5]( >**Abstract** >Large-scale population genomic surveys are essential to explore the phenotypic diversity of natural populations. Here we report the whole-genome sequencing and phenotyping of 1,011 Saccharomyces cerevisiae isolates, which together provide an accurate evolutionary picture of the genomic variants that shape the species-wide phenotypic landscape of this yeast. Genomic analyses support a single ‘out-of-China’ origin for this species, followed by several independent domestication events. Although domesticated isolates exhibit high variation in ploidy, aneuploidy and genome content, genome evolution in wild isolates is mainly driven by the accumulation of single nucleotide polymorphisms. A common feature is the extensive loss of heterozygosity, which represents an essential source of inter-individual variation in this mainly asexual species. Most of the single nucleotide polymorphisms, including experimentally identified functional polymorphisms, are present at very low frequencies. The largest numbers of variants identified by genome-wide association are copy-number changes, which have a greater phenotypic effect than do single nucleotide polymorphisms. This resource will guide future population genomics and genotype–phenotype studies in this classic model system.
42 jdhalv Can someone please explain why this is at all plausible? Human beings have been around for a couple hundred thousand years and started from very small populations with long periods between generations. So more genetic variety in Africa makes sense as corroborating the out of Africa theory. But yeast have been around for many millions of years. They have much shorter reproductive cycles. They can spread on the wind long distances. I would expect a geographic origin for yeast to have been long overlaid with all kinds of cross-migrations and lost to time. I just can't make sense of this.
3 hopheap Is there any mention of the time period at which the single yeast common ancestor lived?
10 [deleted] [removed]
8 [deleted] [removed]