Sentences with phrase «over evolutionary time»

Now, researchers have found evidence that the positions of a fish's spine help guide where its body expands over evolutionary time.

What's more, the ferrets reveal a possible mechanism for how human brains have grown over evolutionary time.

It also points to new mechanisms at work in the brain development of individuals and in species like humans over evolutionary time.

The purpose of this book is to explain how the earth system works over evolutionary time.

Until now, the extent to which our genome has expanded and contracted had been underappreciated, masked by its relatively constant size over evolutionary time.

«We're looking at how you develop an individual body,» explains Erin Jarvis, a PhD student in Patel's lab, «And also how you build a body form over evolutionary time.»

Strader points out that the complexity of the auxin signaling system has increased over evolutionary time as plants became fancier.

@ Colin: If speciation is due to cladogenesis, splitting, rather than anagenesis, which you described, then sister species can diverge enormously over evolutionary time.

This revealed genes that had mutated over evolutionary time.

The observation could explain how a gene that specifies a particular behavior can adapt to accommodate changes in brain circuitry that happen over evolutionary time.

The influence of positive selection (the process by which a protein changes rapidly over evolutionary time scales) in expanding and diversifying animal venoms is widely recognized.

Studying field crickets in Spain during his PhD at the University of Exeter, David Fisher — now a post-doctoral researcher in U of G's Department of Integrative Biology — found the insects» social network remains mostly unchanged each year and their social structure is conserved over evolutionary time.

«There are almost certainly systems where strict asexuality arises, and the lineages go extinct over evolutionary time,» says David Hillis of the University of...

The scientists point out that their finding may reflect an optimization over evolutionary time, as wind speeds on Earth rarely exceed 50 m / s.

The researchers speculate that the insects» sex organs and sex - role reversal may have been driven over evolutionary time by the resource - poor cave environment in which the bugs live.

This is just the first of a series of similar studies, said Gilad, that will look at changes in gene expression over evolutionary time.

Besides the obvious size difference — the human brain is about three times larger than the chimp brain — little has been known about how the human brain and the rest of the nervous system changed in our lineage over evolutionary time.

These and other findings reveal that different Amazonian species make up a diverse matrix of growth and survival strategies that express how these forests assembled over evolutionary time.

The extreme self - sacrificial behavior found in suicide bombers and soldiers presents an evolutionary puzzle: how can a trait that calls for an individual to make the ultimate sacrifice, especially in defense of a group of non-kin, persist over evolutionary time?

These ecosystems haven't evolved in contact with oil, in the same way that most of the heavy metals found deep in the Earth's crust are toxic to us because over evolutionary time we haven't been exposed to them much.

They may also help us understand how consciousness developed, and tell us about our «neuro - archaeology» and the behaviour patterns laid down in the nervous system over evolutionary time.

Their findings also highlight the impressive increase in glyptodonts» size over evolutionary time.

I had long been fascinated with hominin fossils and the way the bones morphed into different forms over evolutionary time.

The scientists also point out that this pattern of delayed development appears to have increased over evolutionary time, with our hominid ancestors presumably slowly gaining larger, more plastic brains relative to modern chimpanzees.

VlincRNAs found in these two types of cells tend to be expressed based upon genetic signals from ancient viruses that invaded our ancestors» genome millions of years ago and were gradually «domesticated» over evolutionary time.

It is this «risk» of higher biological investment that, over evolutionary time, has made women choosier about selecting a high - quality mate.

The vast majority, 38 of them, are so - called retrogenes, modified duplicates that have been churned out over evolutionary time.

«Over evolutionary time, it's as if plants have actively explored the best strategies to safeguard their own survival,» Hedin said.

«Normally, over evolutionary time, things come to a stable point where multiple species can live together,» Dutkiewicz says.

Over evolutionary time, plants may acquire changes in these traits that allow them to attract new pollinators.

Over evolutionary time, the bacterial and plant populations have engaged in an arms race, where the bacteria evolve new effector proteins to help them sneak in, while the plant acquires new defense proteins to uncover and respond to the attack.

Time and again, lineages of furry mammals have gone for a swim and over evolutionary time, they've ballooned in size.