Sentences with phrase «evolutionary studies suggest»

Evolutionary studies suggest that the first identifiable members of the dog family, Canidae, appeared about 40 million years ago during the Eocene epoch, with today's modern wolf appearing nearly two million years ago.

Not exact matches

«The Wall Street Journal recently reported the results of a new study, which suggested that schools shouldn't wait until students are teenagers to teach evolutionary ideas.

Generally, credible scientists will base conclusions on what a significant portion of the evidence suggests, not based on the outlier data which is presented in evolutionary studies.

Now, a new study on lizards suggests that sleep states once thought to occur only in mammals and birds have much older evolutionary origins.

«Much of our historical data about species» population - level responses to climate change comes from observational studies, which can suggest but not confirm causation,» said Anne Marie Panetta, lead author of the study and a post-doctoral researcher in CU Boulder's Department of Ecology and Evolutionary Biology (EBIO).

But recent studies on primates and preschool children suggest that the development of mendacity is more subtle than this and may have its roots deep in our evolutionary past.

Discussing a wide range of ideas and empirical studies that support them, West - Eberhard focuses on showing what recent findings in development, physiology, and behavior suggest about the origins of evolutionary novelties.

The finding suggests an interesting trend, but it is hard to identify a global pattern from this small selection of studies, says evolutionary anthropologist Keith Hunley of the University of New Mexico.

A pair of studies suggests the evolutionary roots of humanlike cooperation can be seen in chimpanzees, albeit in rudimentary forms.

This and other evidence, say study authors Svante Pbo of the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany, and his colleagues, «strongly suggest that this gene has been the target of selection during recent human evolution.»

But a study led by Santiago Ramírez, an evolutionary biologist at the University of California, Berkeley, that was published in Science in late 2011 revealed that the bees arose first, thus suggesting that the two are more independent than previously thought.

Using just scraps of wood and hot embers, our evolutionary cousins figured out how to make tar, a revolutionary adhesive that they used to make formidable spears, chopping tools and other implements by attaching sharp - edged stones to handles, a new study suggests.

Previous studies found patterns suggesting that some lineages and groups are hit harder than others, but in El Copé, the disease hit across the entire range of evolutionary history, wiping out some lineages and not others in a random way.

«Humans are crazy for Facebook, but our research suggests that primates have been relying on the face to tell friends from competitors for the last 50 million years and that social pressures have guided the evolution of the enormous diversity of faces we see across the group today,» said Michael Alfaro, an associate professor of ecology and evolutionary biology in the UCLA College of Letters and Science and senior author of the study.

This study demonstrates just how easy it is to drive a trait to a high frequency in an evolutionary blink of an eye, and suggests that simply because a domestic trait is ubiquitous, it may not have been a target for selection at the very beginning of the domestication process,» said author Greger Larson.

A new study led by Douglas Hamilton, professor of astronomy at the University of Maryland, instead suggests that Sputnik Planitia formed early in Pluto's history and that its attributes are inevitable consequences of evolutionary processes.

Studies of individual animals in the wild suggest that higher cognition has evolutionary trade - offs.

«Foot fossils of human relative illustrate evolutionary «messiness» of bipedal walking: Study of Homo naledi suggests that new species walked upright and also climbed trees.»

«This study supports the idea that punctuated equilibria exist but also suggests a limit to its overall effect on genetic change,» comments Don Waller, an evolutionary biologist at the University of Wisconsin, Madison.

Using the largest dated evolutionary tree of flowering plants ever assembled, a new study suggests how plants developed traits to withstand low temperatures, with implications that human - induced climate change may pose a bigger threat than initially thought to plants and global agriculture.

A new study offers a possible solution to this long - standing evolutionary mystery, suggesting that new sex pheromones may evolve through genetic mutation before potential mates develop the ability to detect them.

Given the number of genomes studied and the sophisticated analysis used, the date for when the species diverges is «the best estimate of what we've gotten so far, and it makes sense,» says Beth Shapiro, an evolutionary biologist at UC Santa Cruz, whose earlier work also suggested these bears split less than a million years ago.

But the new study is the first to suggest recreational fishing can cause evolutionary changes, too.

A new study suggests that this feature disappeared due to a chunk of DNA that went missing after our evolutionary divergence from chimps.

The study suggests that even in highly stratified societies, there may be an evolutionary benefit to settling disputes with egalitarian rules rather than fisticuffs.

«The protein Smurf1 functions in specialized white blood cells called macrophages in both mice and humans, thereby suggesting a conserved evolutionary pathway,» said Dr. Shiloh, co-senior author of the study along with Dr. Beth Levine, Director of the University's Center for Autophagy Research.

The study suggests that chimpanzees may pay an evolutionary price for learning to be social.

A new study suggests that evolutionary changes in the regulation of a gene implicated in perception, behavior, and memory may be partly responsible.

The finding suggests that saliva exchange could play yet - undiscovered roles in many other animals, from birds to humans, says Adria LeBoeuf, an evolutionary biologist at the University of Lausanne in Switzerland, and the study's lead author.

The structure and function of the auditory system is very similar in modern humans and the first primates, suggesting high evolutionary conservation of auditory perception among species,» says Docent Irma Järvelä, the principal investigator of the study.

Our study suggests that the ability to undergo unisexual reproduction may be an evolutionary strategy for eukaryotic microbial pathogens, enabling de novo genotypic and phenotypic plasticity and facilitating rapid adaptation to novel environments.

Controversially, she also argues the study suggests that sexual intimidation in humans may have an evolutionary origin as a mating strategy.

This study is distinctive because the researchers found dramatic differences in the percentage of female sexual and asexual snails (using males» presence as a proxy) and parasite prevalence between sites as close as two football fields apart, «suggesting that these evolutionary links between sex and parasites can operate at a remarkably small scale,» Neiman says.

But over the past 20 years a flood of discoveries has shown that mammals thrived and diversified in the heyday of the dinosaurs, and a new study suggests that our ancestors and relatives had a big evolutionary burst millions of years before dinosaurs flew the coop.

A massive statistical study suggests that even though genetic changes happen at random, the final evolutionary outcome — fitness — is predictable.

«This exciting result suggests that following the mass extinction, there was effectively a burst of diversification of what went on to become the major groups we see today» among fish, said evolutionary biologist Peter Wainwright at the University of California, Davis, who did not participate in this study.

The study, led by McGill University evolutionary biologist Ben Haller in collaboration with IIASA Evolution and Ecology Program Leader Ulf Dieckmann and IIASA researcher Rupert Mazzucco, suggests that a varied environment spurs the evolution of new species and promotes biodiversity by creating places of refuge — «refugia» — for new organisms to evolve.

However, this study suggests that this evolutionary event is tied to the availability of oxygen in the atmosphere.

While the Anopheline Y had previously been implicated in male mating behavior, recent data from the Anopheles gambiae complex suggests that, apart from the putative primary sex - determiner, no other genes are conserved on the Y. Studying the functional basis of the evolutionary divergence of the Y chromosome in the gambiae complex is complicated by complete F1 male hybrid sterility.

There is also an evolutionary puzzle: if glycine deficiency is a serious problem in all large animals, as these studies suggest, why has it not been overcome by natural selection?

«If a substantial number of lowland tropical species are already living near their upper temperature limit, as evolutionary principles, climate history and recent studies suggest,» he added, «then lowland biotas may undergo attrition, as some species shift upwards in elevation, and others suffer decreased fitness in the lowlands.»