Quantcast

Latest Evolutionary biology Stories

2013-06-11 13:25:51

Although scientists have known since the middle of the 19th century that the tropics are teeming with species while the poles harbor relatively few, the origin of the most dramatic and pervasive biodiversity on Earth has never been clear. New research sheds light on how that pattern came about. Furthermore, it confirms that the tropics have been and continue to be the Earth's engine of biodiversity. By examining marine bivalves (two-shelled mollusks including scallops, cockles and...

2013-06-11 11:31:43

Preschool children who have been neglected or emotionally abused exhibit a range of emotional and behavioral difficulties and adverse mother-child interactions that indicate these children require prompt evaluation and interventions, according to a systematic review by Aideen Mary Naughton, M.B., B.Ch., B.A.O., D.C.H., F.R.C.P.C.H., of Public Health Wales, Pontypool, England, and colleagues. A total of 42 studies of children age 0 to 6 years with confirmed neglect or emotional abuse who...

2013-06-11 11:12:09

Females play a larger role in determining paternity than previously thought, say biologists in Syracuse University's College of Arts and Sciences. Their findings are the subject of a new paper titled "Female mediation of competitive fertilization success in Drosophila melanogaster," published this month by Proceedings of the National Academy of Sciences of the United States of America. Stefan Lüpold, a research assistant professor in the college's Department of Biology and...

Self-fertilizing Plants Play Part In Their Own Death
2013-06-10 10:28:56

University of Toronto Many plants are self-fertilizing, meaning they act as both mother and father to their own seeds. This strategy — known as selfing — guarantees reproduction but, over time, leads to reduced diversity and the accumulation of harmful mutations. A new study published in the scientific journal Nature Genetics shows that these negative consequences are apparent across a selfing plant's genome, and can arise more rapidly than previously thought. In the study,...

New Genes Essential To Life
2013-06-07 11:53:53

Brett Smith for redOrbit.com - Your Universe Online Some genes within an organism´s DNA have been there for a billion years and can be traced back through earlier species, while other genes are newly acquired and only a few million years old. According to a new report in the journal Science, these newly acquired genes can quickly become a major part of an organism´s genetic machinery and even essential for life. In the study, a team of American and German researchers were able...

Contaminated Water Cleaned By Solar-powered Nanofilters That Pump In Antibiotics
2013-06-06 20:24:09

American Chemical Society Using the same devious mechanism that enables some bacteria to shrug off powerful antibiotics, scientists have developed solar-powered nanofilters that remove antibiotics from the water in lakes and rivers twice as efficiently as the best existing technology. Their report appears in ACS´ journal NanoLetters. David Wendell and Vikram Kapoor explain that antibiotics from toilets and other sources find their way into lakes and rivers, with traces appearing in...

2013-06-06 18:27:15

Genetic mutation of a testis stem cell actually gives the disease an edge, making older fathers more likely to pass it along to their children Scientists at USC have unlocked the mystery of why new cases of the genetic disease Noonan Syndrome are so common: a mutation that causes the disease disproportionately increases a normal father´s production of sperm carrying the disease trait. When this Noonan syndrome mutation arises in a normal sperm stem cell it makes that cell more...

Comets Brought Organic Ingredients For Life
2013-06-06 08:23:25

April Flowers for redOrbit.com - Your Universe Online When it came to jump-starting life, the early Earth was not a very hospitable place. New research from the Lawrence Livermore National Laboratory (LLNL) and the University of Ontario Institute of Technology (UOIT) reveals that life on Earth may indeed have come from outer space. LLNL scientist Nir Goldman and UOIT´s Isaac Tamblyn — a former LLNL postdoctoral researcher — found that billions of years ago icy comets...

2013-06-04 23:17:12

Letter from health professionals urges President to pressure FDA to act on stalled antibiotics policies to protect public health. Washington, DC (PRWEB) June 04, 2013 Health Care Without Harm (HCWH), Healthy Food Action, and the Pew Charitable Trusts delivered a letter with signatures from 795 health professionals to President Barack Obama today, urging him to pressure the Food and Drug Administration (FDA) to act on stalled policies to reduce the overuse and misuse of antibiotics in food...

2013-05-29 09:31:00

Given the chance, women are more likely than men to opt out of a request to give a charitable donation, a group of economists have found. The issue of which gender is more generous has been debated for years. A new field experiment conducted by scholars at the University of Chicago and University of California, Berkeley shows that when it´s easy to avoid making a donation, such as not responding to a door-to-door solicitor, women are less likely than men to give. The results of the...


Latest Evolutionary biology Reference Libraries

2014-04-22 14:47:42

John Harold Ostrom (February 18, 1928 – July 16, 2005) was an American Paleontologist who was greatly influential in the revival of scientific research on Dinosaurs. He is best known for demonstrating that Dinosaurs were less like contemporary reptiles but more closely related to large, flightless birds like the ostrich – a theory that holds its ground in the paleontological community to this day. John Ostrom was born and raised in Schenectady, New York. His father was a physician, and...

Paleontology
2014-01-12 00:00:00

Paleontology or Palaeontology is the scientific study of prehistoric life, including the study of fossils to determine the organisms evolution and interactions with each other and their environments. Paleontological observations have been documented as far back as 5th century BC. The science became established in the 18th century as a result of Georges Cuvier’s work on comparative anatomy, and it developed quickly within the 19th century. The term itself comes from Greek palaios, meaning...

New Phytologist
2012-04-30 15:00:51

The New Phytologist is a peer-reviewed scientific journal published by Wiley-Blackwell on behalf of the New Phytologist Trust. It covers all aspects of plant science, with topics ranging from intracellular processes to global environmental change. Articles are published in the following categories: Original research articles, Research reviews, Commentaries, Letters, Meeting reports, Tansley reviews. The following topics and subtopics are covered: Physiology and development:...

Journal of Zoological Systematics and Evolutionary Research
2012-04-29 22:59:00

Journal of Zoological Systematics and Evolutionary Research is a quarterly peer-reviewed scientific journal published by Wiley-Blackwell. It was originally established in 1963, then reestablished in 1994 by John Wiley & Sons. It was published as ‘Zeitschrift für zoologische Systematik und Evolutionsforschung’ from March 1963 to June 1994. It was published by the Academic Publishers’ Association (Akademische Verlagsgesellschaft ) Frankfurt, Germany. The editor-in-chief is Dr....

More Articles (4 articles) »
Word of the Day
conjunto
  • A style of popular dance music originating along the border between Texas and Mexico, characterized by the use of accordion, drums, and 12-string bass guitar and traditionally based on polka, waltz, and bolero rhythms.
The word 'conjunto' comes through Spanish, from Latin coniūnctus, past participle of coniungere, to join together; see conjoin