Over millions of years, variation and selection, variation and selection trial and error, trial and error.

Change can be made in an evolutionary, rather than a revolutionary, way.

Friedrich Leopold August Weismann (17 January 1834 5 November 1914) was a German evolutionary biologist.

Those values have their origin in the Islamic faith, which prohibits discrimination and separation and encourages brotherhood and peace.

The proposals, involving an amount of 15,506,500 euros were based on an evolutionary approach and guided by the principle of zero growth.

The languages of Bhutan are still not well characterized, and several have yet to be recorded in an in depth academic grammar.

The degree of gender differentiation in a country depends primarily on the culture within that nation and its history.

For instance, neural stem cells from the brain, which are derived from ectoderm, can differentiate into ectoderm, mesoderm, and endoderm.

At this stage the cells start to bind firmly together in a process called compaction, and cleavage continues as cellular differentiation begins.

Well, to end on a very positive note, I think evolutionarily speaking, this is probably a fairly good thing, in the end.

Sir Ronald Aylmer Fisher FRS (17 February 1890 29 July 1962) was an English statistician, evolutionary biologist, mathematician, geneticist, and eugenicist.

But the geneticist Professor Steve Jones describes how Unilever actually did solve this problem trial and error, variation and selection.

The media are no remedy, as competition for ratings forces them to favor oversimplification over differentiation, complexity, and nuance.

Two commonly used CD molecules are CD4 and CD8, which are, in general, used as markers for helper and cytotoxic T cells, respectively.

For economic convergence, if allowed to ripen, could set Taiwan and the PRC on an evolutionary course toward common sovereignty.

In the cephalic portion, the germ layer shows specific differentiation at the beginning of the 4th week, while in the caudal portion it occurs at the end of the 4th week.

They can be propagated for extended periods of time and differentiated into both neuronal and glia cells, and therefore behave as stem cells.

Of course, empathy is not the only part of our inherited nature that shapes our behavior toward others. In fact, there is also a compelling evolutionary explanation for xenophobia.

One of the two competitors will always overcome the other, leading to either the extinction of this competitor or an evolutionary or behavioral shift toward a different ecological niche.

If they are given the right chemical environment these cells have the same ability as embryonic stem cells to develop into many different cell types.

It is now known that the feeder cells provide leukemia inhibitory factor (LIF) and serum provides bone morphogenetic proteins (BMPs) that are necessary to prevent ES cells from differentiating.

The entry into force of the Kyoto Protocol, and the fact that not all Parties to the Convention are also Parties to the Protocol, necessitate some differentiation in the contribution regime.

The observation of evolutionary processes occurring (as well as the modern evolutionary synthesis explaining that evidence) has been uncontroversial among mainstream biologists for nearly a century and remains so today.

It is also evolutionary because the Department has to pilot new reform measures continuously in order to improve its performance without jeopardizing the smooth functioning of the intergovernmental bodies.

However, we expect appropriate security arrangements to be determined on the basis of some principles of differentiation and stringent security arrangements not to unduly limit the engagement of the United Nations staff in dealing with problems on the ground.

Essentially, the concept has served to justify collectivist authoritarian rule by aligning it with local tradition and culture, with autonomy defined in terms of otherness that is, differentiation from the West and its values.

Although the Nordic countries support the idea of establishing a permanent court through an international convention, they are at the same time of the view that the establishment of such a court should be based on an evolutionary approach.

Only known from a coracoid described by Richard Lydekker in 1891, whether it is indeed distinct from the living species and not just a paleosubspecies needs to be studied, given its late age.

Now that we've had all that happen, and we have all this data out there telling us that it's much better to have diversity around the decision making tables, will we see business and finance change?

In terms of physiology, CD molecules can act in numerous ways, often acting as receptors or ligands (the molecule that activates a receptor) important to the cell.

Worse yet, other than the ephemeral pleasure that it provides, there is not a single biochemical process that requires dietary fructose it is a vestigial nutrient, left over from the evolutionary differentiation between plants and animals.

My guess is that there's nothing quite that specific in our evolutionary past. But rather, if you're looking for an evolutionary explanation, you might say that most organisms are neo phobic that is, they're a little scared of stuff that's new and different.

In common with embryonic stem cells, adult stem cells have the ability to differentiate into more than one cell type, but unlike the former they are often restricted to certain types or lineages .

Even without speciation, the same outcome could occur through a loss of genetic diversity If everyone selected the same traits for their offspring, their descendants would be incapable of surviving a sudden, unexpected environmental challenge.

I mean, is there anything that is not visualizing what can't be seen, in terms of discovering this dinosaur bone from a small piece of it that's out there, or seeing the distortion that we try to see as evolutionary distortion in one animal to another?

The challenges are (i) that subtle gender dynamics tend to get lost in a standardized global approach and (ii) initiatives that support implementation of the gender policy are often set aside at times of unexpected emergencies and high staff turnover.

If the CD4 count rapidly increases (due to effective treatment of HIV, or removal of other causes of immunosuppression), a sudden increase in the inflammatory response produces nonspecific symptoms such as fever, and in some cases a worsening of damage to the infected tissue.

But translating selection pressure into evolutionary change requires another crucial ingredient the variation observed in the trait should be caused at least in part by genetic differences.

But translating selection pressure into evolutionary change requires another crucial ingredient the variation observed in the trait should be caused at least in part by genetic differences. Indeed, evolution is possible only if the resemblance between related individuals has a genetic basis, and is not simply a reflection of a shared environment.