Sentences with phrase «in evolutionary»

SEXUAL CONFLICT The male and female organs in each white bloom of the wildflower called starry campion are locked in an evolutionary war of parenthood.

The work, which has just been published in PLoS One, makes it possible to reconstruct a chapter in the evolutionary history of this lineage.

Some present - day beetles use orchids for nectar, but no fossil evidence has ever been found showing beetles in the evolutionary past pollinating orchids — until now.

It isn't a famous dinosaur, but it fills an important spot in the evolutionary history of the long - tailed sauropod.

In an evolutionary novelty, a flightless prehistoric bird found only in Jamaica used its weighty wing bones to clobber rivals during territorial disputes.

The team of 35 to 40 scientists was led by Lee Berger, research professor in the Evolutionary Studies Institute at the University of Witwatersrand in South Africa.

But we want visitors to see the broader story of evolution, with dinosaurs in that evolutionary context.

They found that 33 percent of all the branches in this evolutionary tree are gone — El Copé has lost 33 percent of the total history of all its amphibians.

The primate iron transport protein and a bacterial transferrin surface receptor are in an evolutionary battle for iron.

According to McQuillan, a Ph.D. candidate in evolutionary biology at Lehigh and lead author of the study, the northern Black - capped Chickadee is a model species for studying spatial memory and learning, traits that are key to scatter - hoarders» survival.

Fournier is leading an attempt to reconstruct the history of life in those evolutionary dark ages — the hundreds of millions of years between the time when life first emerged and when it split into what would become the endless tangle of existence.

To better understand why our psyche responds so deeply, Christopher Krupenye, a Duke University graduate student in evolutionary anthropology, and his colleagues Alexandra Rosati of Yale University and Brian Hare of Duke gathered 40 of our closest living relatives — 23 chimpanzees and 17 bonobos — and offered them options for choosing food: either one or two fruits versus a constant number of peanuts.

Professor Crowley's finding therefore moves the goalposts back at least 60 million years, which, given humans have only been on the planet for around a tenth of that time, is not an insignificant drop in the evolutionary ocean.

University of Wyoming researchers studied inbred domestic ferrets and determined the mammals have low genetic diversity on a global scale, according to a paper recently published in Evolutionary Applications.

The Cambrian Period, which occurred between 541 million and 485 million years ago, is an important point in evolutionary history where most of the major groups of animals first appear in the fossil record.

In the evolutionary arms race to defeat the disease, subtle and indirect maneuvers like these may ultimately prove most effective.

They believe that viruses played a role even earlier in the evolutionary mix.

«In evolutionary terms, all males strive to have as many offspring as they can, but when it comes to reproduction you can't have everything,» said Dr Jacob Dunn, from the University of Cambridge's Division of Biological Anthropology, who led the new study.

«Tools and theories that have been developed in evolutionary biology have utility for understanding cancer,» Townsend added.

There is also a debate about where pterosaurs fit in the evolutionary tree.

I. panamensis was clearly one of them, and its fossil remains have helped the team understand something less clear: When in their evolutionary tract did river dolphins transition from the saltwater of the ocean to the freshwater of rivers?

In evolutionary terms, they are believed to have descended from a common ancestor of cyanobacteria, which emerged 3.6 billion years ago.

«At the beginning, I hadn't decided whether I wanted to work specifically in evolutionary genetics or in a different field of genetics,» says Pérez.

Underpinning this is Conway Morris» claim that convergence is demonstrable at every major stepping stone in evolutionary history, from early cells, through to the emergence of tissues, sensory systems, limbs, and the ability to make and use tools.

In evolutionary terms, it was a terrific deal.

Adrian Williams and Robin Dunbar make a persuasive case for the probiotic effect of the tuberculosis pathogen in our evolutionary...

In a new PBS series, Your Inner Fish, paleobiologist Neil Shubin hosts a journey through time that answers the question in evolutionary terms.

The recovery took just 300,000 years, a short time in evolutionary terms.

All 4 researchers feel that to make it in evolutionary genetics, skills in bioinformatics and mathematics are key.

They all use bioinformatics tools and computer simulations to analyse the genomic data in an evolutionary light.

The finding confirms the idea that cooperative behaviour, which relies on the participants» having a sense of fair play, appeared early in our evolutionary history.

«The nucleocytoplasmic component of the eukaryotic cell branches off very early in the evolutionary radiation of the archaebacteria.

It was also believed that infanticide was common — male pumas killing babies so that the female would go into estrous and then conceive his kids, thereby ensuring that his genes were represented in the evolutionary pool.

Robin Dunbar of the University of Liverpool writes in an accompanying commentary that «in evolutionary terms, sociality is good for you.»

Moreover, venom research has mostly neglected ancient animal groups in favor of focusing on venomous snakes and cone snails, which are both «young» animal groups that originated only recently in evolutionary timescales, approximately 50 million years ago.

Lacking a stinger is no barrier to kicking butt in the evolutionary cage match between Australian bees and hive - invading parasites

Arabidopsis thaliana, pollinates itself — an ability that new research suggests it acquired relatively recently in its evolutionary history.

It seems to be an intermediate step between fish and land - living animals, a key link in the evolutionary chain that led to amphibians, reptiles, and dinosaurs.

3) In an evolutionary sense, the role of plant miRNAs in regulating honeybee development may offer valuable hints for our understanding of cross-kingdom interaction and co-evolution.

«Although humans live longer than lizards, this rate of change would still be rapid in evolutionary terms.»

Edward O. Wilson has spent a lifetime squinting at ants and has come away with some of the biggest ideas in evolutionary biology since Darwin.

This startling and controversial idea is attracting increasing support among scientists, following recent discoveries that could well be the missing links in that evolutionary pathway.

The tongue orchid's extreme style of deception is new to science, but it is just the latest twist in an evolutionary process Charles Darwin described 150 years ago.

For the most part, you won't even find the term «friendship» in the evolutionary biology literature.

The proportion of genes that are essential is similar in every evolutionary age group that we examined.

A cautionary tale in evolutionary theory is coming straight from the horse's mouth.

This knowledge could play an important role in the design of future vaccination campaigns, but also highlights a deeper evolutionary logic which modern humans sometimes are governed by: as social beings, in the right circumstances, we can afford to take into account a broader societal context, but when we get the chance to invest in the evolutionary «core values» (survival and procreation) the larger context is easily forgotten.

«Relationship dissatisfaction and mate guarding intensity, in turn, are key processes linked to outcomes such as infidelity and breaking up, both of which can be costly in evolutionary currencies,» said co-author and psychology professor David Buss.

In other words, the passenger pigeon will not become a pest as an outbreak species, constrained by the supplies of acorns and other mast as in its evolutionary past.

The world was more dangerous in our evolutionary past, so it paid to be risk - averse and highly sensitive to threats, and if things were good, then the status quo was worth maintaining.