987 posts · 383,553 views
The microbes of an organism could affect the evolution of a new species.... Read more »
Robert M. Brucker and Seth R. Bordenstein. (2013) The Hologenomic Basis of Speciation: Gut Bacteria Cause Hybrid Lethality in the Genus Nasonia. Science. info:/
Humans have weird eating habits compared to other animals. They cook their meals, ascribe all sorts of cultural value to consuming and easily overeat themselves. Especially this last characteristic makes us wonder lately: to what extent are our eating habits tied to our genetic make up?
... Read more »
John R Krebs. (2009) The gourmet ape: evolution and human food preferences. american journal of clinical nutrition. DOI: 10.3945/ajcn.2009.27462B
The DNA of Albert Perry may change the story of human origins. Perry, an African-American, approached a DNA testing company to find out more about his ancestry. The results would have come as quite a surprise (had he lived to see them), and have raised questions for geneticists around the world.
It turns out that Perry carried a very different type of Y chromosome, never seen before. Every male has a Y chromosome, which is a piece of DNA inherited by sons from their fathers. But, unlike most DNA, the Y chromosome is not shuffled as it is passed down, and changes only slowly through mutation. Tracking these mutations allows scientists to create a genetic tree of fathers and sons going back through time.... Read more »
Batini C, & Jobling MA. (2011) The jigsaw puzzle of our African ancestry: unsolved, or unsolvable?. Genome biology, 12(6), 118. PMID: 21722347
Strange as it may seem, water doesn’t actually freeze at zero degrees. In fact, even at temperatures as cold as -10°C, water still needs help turning into ice. Living creatures of all stripes have learned to take advantage of this curious fact in different ways, though none have done so with quite as much style as bacteria.... Read more »
Constantinidou HA, Hirano SS, Baker LS, . (2013) Atmospheric Dispersal of Ice Nucleation-Active Bacteria: The Role of Rain Phytopathology. Phytopathology. DOI: 10.1094/Phyto-80-934
Morris CE, Sands DC, Vinatzer BA, Glaux C, Guilbaud C, Buffière A, Yan S, Dominguez H, . (2008) he life history of the plant pathogen Pseudomonas syringae is linked to the water cycle. The ISME journal. DOI: 10.1038/ismej.2007.113
The famous paleontologist Stephen Jay Gould once asked what would happen if we were to ‘replay the tape of life’. How different or similar would it turn out? He himself thought it could be profoundly different. In other words, in his view evolution is unrepeatable.
However, instances of convergent evolution, where organisms of a different pedigree can evolve to look surprisingly similar, have caused some to ask whether there might not be somewhat predictable patterns or trends in the grand process that is evolution. Just think of a tuna (fish), dolphin (mammal), and ichthyosaur (reptile). Look quite similar, don’t they?... Read more »
Mahler, D.L.; Ingram, T.; Revell, L.J. . (2013) Exceptional Convergence on the Macroevolutionary Landscape in Island Lizard Radiations. Science. DOI: 10.1126/science.1232392
n a paper published in March 2013, Drs. Rohan, Heo, Choi and colleagues have examined the relationship between body fat and the risk for development of breast cancer in post-menopausal women. ... Read more »
Rohan TE, Heo M, Choi L, Datta M, Freudenheim JL, Kamensky V, Ochs-Balcom HM, Qi L, Thomson CA, Vitolins MZ.... (2013) Body fat and breast cancer risk in postmenopausal women: a longitudinal study. Journal of cancer epidemiology, 754815. PMID: 23690776
We may need a good pair of brains to make decisions that are best for everyone. On the other hand, war taught us that rather intelligent people can also do much harm. Are those evil geniuses exceptions? Or do better brains actually enable people to justify their malintentions?... Read more »
The road to market for a promising new therapy can be notoriously long and treacherous. Before the first small-scale clinical trials in humans can even be contemplated, a new therapy (such as a drug or surgical procedure) must first pass muster in preclinical animal studies.... Read more »
Tsilidis KK, Panagiotou OA, Sena ES, Aretouli E, Evangelou E, Howells DW, Salman RA, Macleod MR . (2013) Evaluation of excess significance bias in animal studies of neurological diseases. PLoS Biology . DOI: 10.1371/journal.pbio.1001609
When men have a blush woman feel more attracted to them. The redness is associated with some very attractive characteristic.... Read more »
Stephen ID, Oldham FH, Perrett DI, & Barton RA. (2012) Redness enhances perceived aggression, dominance and attractiveness in men's faces. Evolutionary psychology : an international journal of evolutionary approaches to psychology and behavior, 10(3), 562-72. PMID: 22947678
How does one measure the ‘Americanness or ‘Japaneseness’ of someones personality? We asked Derya Güngör, research fellow of the Catholic University of Leuven. She recently published her research in the Journal of Cross-Cultural Psychology, about changing personalities of Japananese women that migrated to the United States.... Read more »
Derya Güngör, Marc H. Bornstein, Jozefien De Leersnyder,, & Linda Cote, Eva Ceulemans, and Batja Mesquita1. (2013) Acculturation of Personality: A Three-Culture Study of Japanese, Japanese Americans, and European Americans. Journal of Cross-Cultural Psychology. DOI: 10.1177/0022022112470749
You know it’s not only you and me who are constantly evolving by adjusting to our living environment; There are millions of others too who are doing this job as efficiently as it could be. Researchers from University of Illinois have discovered that gut bacteria facilitate the adaptation of the western corn rootworm, which is basically a beetle, to crop rotation.... Read more »
Chu CC, Spencer JL, Curzi MJ, Zavala JA, & Seufferheld MJ. (2013) Gut bacteria facilitate adaptation to crop rotation in the western corn rootworm. Proceedings of the National Academy of Sciences of the United States of America. PMID: 23798396
Is the lifespan of a neuron is proportional to the lifespan of its species?... Read more »
Magrassi L, Leto K, . (2013) Lifespan of neurons is uncoupled from organismal lifespan. Proceedings of the National Academy of Sciences of the United States of America. DOI: 10.1073/pnas.1217505110
In the population studied, high-energy snacks accounted for 20% of the daily intake.... Read more »
Theodoratou E, Farrington SM, Tenesa A, McNeill G, Cetnarskyj R, Korakakis E, Din FV, Porteous ME, Dunlop MG, & Campbell H. (2013) Associations between dietary and lifestyle risk factors and colorectal cancer in the Scottish population. European journal of cancer prevention : the official journal of the European Cancer Prevention Organisation (ECP). PMID: 23820601
We know that we are surrounded by a myriad of microorganisms, but precise characterization of the diversity of this microscopic population was still impossible recently. The difficulty of identifying and characterize microbes in samples arise from the fact that the different conditions used in laboratories to grow microbes are unsuitable for a majority of them. These hard to know microorganism became known as ‘microbial dark matter’, because they were as hard to get a handle on as the dark matter in the universe.... Read more »
Roseanne F. Zhao, Ph.D. (2013) The Power of Sequencing Single Cell Genomes . NIH Medical Scientist. info:/
Monday mornings. They drag. Getting the ol’ noodle back into work-mode, especially after a fun summer weekend, can be a tall order. Many of us head straight for the classic boost – a cup of Joe – to help combat a case of the Monday’s but some new studies suggest that chewing gum could also provide some relief by enhancing our brain’s arousal, alertness, and attention.
In a recent study published in the British Journal of Psychology, Morgan and colleagues assessed the performance of 40 psychology undergraduate students on an auditory vigilance task while chomping on a wad of gum.... Read more »
It doesn’t only feel really bad to be lonely, it also has actual unhealthy effects on your body, various researchers have showed. A new study now suggests that lonely people have a different physical reaction to acute stress. It appears that their mental state promotes inflammation.... Read more »
Lisa M. Jaremka, Christopher P. Fagundes, Juan Peng, Jeanette M. Bennett, Ronald Glaser, William B. Malarkey, & Janice K. Kiecolt-Glaser. (2013) Loneliness Promotes Inflammation During Acute Stress. psychological science. DOI: 10.1177/0956797612464059
The criminal justice system has always been at the sharp end of race relations in the United States. Not only have African Americans been treated more harshly than whites as suspects and offenders, they have been taken less seriously as victims.... Read more »
Tushar Kansal. (2005) RACIAL DISPARITY IN SENTENCING: A REVIEW OF THE LITERATURE. The Sentencing Project. info:/
The Western lifestyle, with its abundant fast food, is wreaking havoc with our waistlines and sending many of us to early graves. A high fat, high salt, low cost diet has been fuelling an obesity epidemic in industrialised nations and, increasingly, in developing countries. While the consequences of obesity, such as an increased risk of developing type 2 diabetes, cardiovascular disease, fatty liver, arthritis and cancer are well known, public health solutions are thin on the ground.... Read more »
Poutahidis T, Kleinewietfeld M, Smillie C, Levkovich T, Perrotta A et al. (2013) Microbial reprogramming inhibits Western diet-associated obesity. PLoS ONE. DOI: 10.1371/journal.pone.0068596
Do Virgos and Capricorns or Leos and Libras match?
Ok, let’s get it over with. There are so many people believing in matching sun signs, sometimes even seeming to have a point stating that the influence of the sun and stars can not be underestimated, that it’s time to put it to the test. Luckily David Voas, researcher at the University of Manchester, did so already in 2007.... Read more »
David Voas, Cathie Marsh. (2007) Ten million marriages: A test of astrological ‘love signs’. Centre for Census and Survey Research. info:/
It is stated that men could benefit from 60 minutes of aerobic exercise, even if they have not been active in a regular basis their whole life. It is as simple as this: during exercise, certain molecule levels will fluctuate, which will result in an adverse environment for prostate tumor development and progression.... Read more »
Rullman E, Mijwel S. (2013) Rundqvist H, Augsten M, Strömberg A, . Effect of Acute Exercise on Prostate Cancer Cell Growth. PLoS ONE. DOI: 10.1371/journal.pone.0067579
Do you write about peer-reviewed research in your blog? Use ResearchBlogging.org to make it easy for your readers — and others from around the world — to find your serious posts about academic research.
If you don't have a blog, you can still use our site to learn about fascinating developments in cutting-edge research from around the world.
Research Blogging is powered by SMG Technology.
To learn more, visit seedmediagroup.com.