Sentences with phrase «differences among species»

The genetic basis of morphological differences among species is still poorly understood.

Such comparisons have been relevant to discover important genomic differences among species or strains.

And the result is that even though there are differences among species and even though populations are impacted by unpredictable forces, we can get away with a simple zero - sum - game as a good approximation of reality.

The leading explanation for these changes has been biological differences among species, but a new study suggests that the local climatic conditions are more likely causing these shifts

The organoids grow for several weeks — sometimes up to a year — allowing the researchers to compare growth and pinpoint where the differences among species arise.

The differences among species between the two groups separated by the threshold value can be explained by longer neurogenic periods rather than different neurogenic programs.

«Small but distinct differences among species mark evolution of human brain.»

To narrow down this time window, Whitfield studied sequences of three genes from 28 species of wasps — some virus - carriers and some not — and used differences among the species to build a family tree.

But, as Stokes found from his research [pdf], no hard - and - fast rule dictates which animals gain wide appeal: «Really tiny differences among species can have huge effects on how much appeal they have,» he says.

«There were huge differences among species,» Sinacore said.

What characterizes them is not the difference between the sexes, but the difference of orders and, within each order, the differences among species: There are the fish of the sea, the birds of the air, the beasts of the earth, etc..

This is the largest male - female size difference among species where the males are larger, far exceeding the factor - of - three difference in great bustards, which show the greatest difference among birds.

Not exact matches

There are differences between human beings and other creatures, just as there are differences among various species of other creatures.

«Features and structures of the enamel layer have long been associated with differences in diet and tooth usage among animals, and can also help in the understanding the relationships among fossil and living species.

In many cases, especially among insects, separate species can appear identical except for minute differences in their genitalia.

The question is always where to draw the line: Are the differences just a matter of normal variation among individuals within a species?

Several recent studies point out differences among all these fossils, which are considered as normal variations within the species.

To determine what level of a toxin is safe, researchers take a dose that has no observed toxicological effect in an animal and divide it by 10 once (to account for the differences between species) and then again (to account for variations among humans» ability to handle toxins); for pesticides, the dose is then divided by 10 a third time (to allow for the extraordinary sensitivity of babies and children).

This is not only because tests on laboratory animals can cause much suffering, but also because the relevance of the data they provide for predicting effects in humans or other animals is severely limited by differences among major species.

Nearby, interactive electronic displays explain the differences among the three species.

For comparison, the genetic differences among giraffe species are at least as great as those between polar and brown bears.

He was among the first scientists to use DNA sequences to study species differences and speciation.

Partitioning the data to account for possible differences in evolutionary rates among genes (SM4) did not result in a tree more similar to the TENT, but instead in a tree with increased support for monophyletic groupings of species with these broadly shared traits (fig.

In terms of size, there wasn't much difference in how brains varied among family members: Closely related individuals of both species tended to have very similar brain volumes.

The researchers» results suggest that structural and functional differences between queens and workers result from the differential expression of evolutionary conserved sets of genes, or genes that are basically expressed in the same manner throughout evolution among all ant species.

This adaptation, unique among vertebrate life, also makes them a useful species for studying genetic differences in physical form and performance.

Lücking and his team collected and sequenced DNA from 376 samples of the leafy lichen and discovered 126 new species among them, many with striking physical differences, according to their study published in June.

There are hints of postcranial diversity among species, but our knowledge of the nature and extent of potential differences is limited.

This new fossil confirms the presence of at least two postcranial morphotypes within early Homo, and documents diversity in postcranial morphology among early Homo species that may reflect underlying body form and / or adaptive differences.

Research by UCLA life scientists and 50 colleagues sheds new light on the biological differences among more than 150 species of monkeys in South America, many of which are endangered.

The stronger the connections and fewer differences there are among species, the greater the risk.

«Furnas and McGrann provide a textbook example of how to detect differences in the timing of nesting among bird species using information on the peak date of singing derived from surveys and automated recorders,» according to UC Berkeley's Steve Beissinger, an expert on avian phenology who was not involved in the study.

Koops added: «Given the close evolutionary relationship between chimpanzees, bonobos and humans, insights into species and sex differences in «preparation» for tool use between chimpanzees and bonobos can help us shed light on the functions of the highly debated gender differences among children.»

According to them, the genetic differences among giraffe species are as great as those between polar and brown bears.

This diversity complicates the tasks of identifying which bacteria are present, and determining whether differences in bacterial populations reflect shifts among redundant species, or disease - related changes.

A new study has suggested that the genetic differences among giraffe species are as great as those between polar and brown bears.

RND takes into account possible mutation rate differences among genomic regions by incorporating divergence to a third more distantly related species, and is expected to be inversely proportional to the amount of gene flow.

Caveats regarding species differences and translatability remain a challenge in metabolic work, even among rodents.

Further, because of differences in protocols and submission rates among species and states, comparison of percentages of animals with positive results between species or states is inappropriate.»

- Iizuka has received a ton of requests from fans to have their own original characters appear in Sonic games - while that couldn't happen, Sonic Forces» custom character recognizes that fan desire - the avatar was created with the idea of «making straight high - speed action» - this time the concept is that all three styles (Modern, Classic, Avatar) would be high - speed based - make selections for the face, mouth, body color, and gender of custom characters - each species will also have their own unique skills, such as wolves being able to pull nearby rings - you can't change custom characters in the middle of the game - there is some sort of feature that's unlocked after you've cleared the game once related to this - the new avatar style will have a speedy and rhythmic style like Modern Sonic, but also different vectors from Sonic - this includes differences in timing for pressing buttons, or the Wisps giving the avatar trickier movements - the story aims to depict heroes that would feel like Sonic - by controlling different characters, the devs hope to show a story that extends to explaining the world setting as well - the story concept has been «Hero Army vs. Eggman's Army» from the start - when wondering who should be made playable among the heroes, the idea came up for Classic Sonic - the character setting for the avatar is a civilian in an area occupied by Eggman who stands up and fights together with Sonic - during stages, you'll hear radio contact from partners like Tails and Amy - Sonic and the rest of the gang form a resistance to stand against Eggman's army, so they relay information from headquarters - boss characters like Chaos and Metal Sonic will appear in Eggman's army - details on the new character (Infinite) are being kept secret - the main part of the storyline is that Eggman gathers strong enemies in the past to form an all mighty army - some people might be wondering why Shadow is on the enemy's side, but they can find out more by experiencing the story - the team thinks Japanese fans are taking a liking to the serious story and character customization features - there were some struggles with the new engine in early stages, but now they've moved to a smooth development process - the team knew they wanted to bring the game to Nintendo's new console before they even knew it was the Switch - the Switch info came to them during the middle of the game's development - SEGA knew Nintendo fans would want to play Sonic's new game, which is why they personally worked to bring it to Switch - SEGA plans to show the game in Japan at Tokyo Game Show 2017 in September - the team is also working on providing new information, including news that would be unique to Japan

In other words, the benefit of the whole community (different songbird species coexisting) far outweighs the differences among individual species when taking on a predator (owl).

To refine this study to specific sites and a specific tree species, soil characteristics between two areas in Montana were then compared to seek possible differences among ponderosa pine forests where tree mortality was recorded between 1998 and 2010.

Sequence differences in the internal transcribed spacers of DNA among four species of hookworm.

Few of the studies exploring stress - related reductions in IVF conception or live birth rates have accounted for the possibility of individual differences in sensitivity to stressors or in propensity to stress induced reproductive malfunctions, despite evidence of such differences among primates (Verhaak et al., 2004; Bethea et al., 2005) and other species (Schoech, 1991).