Sentences with phrase «most vertebrate»

However, like most vertebrate cell lines, target sequences are inserted randomly and stable mutation and expression of the transcript can not be controlled for.

Most vertebrate fossils are known from a very limited number of places on Earth, so Christian's goal of understanding the geographic complexity of extinction and recovery is a big one.

Yet trying to understand the genetic explanations of such questions is surprisingly difficult considering most vertebrate genomes, including our own, are made up of literally billions of DNA bases that can determine how an organism looks and functions,» says Castoe.

It killed off most of the big guys, according to a new study, and effectively shrunk most vertebrate species to the size of a human forearm or smaller.

In most vertebrates and some mollusks, the eye works by allowing light to enter it and project onto a light - sensitive panel of cells known as the retina at the rear of the eye, where the light is detected and converted into electrical signals.

(The cloaca is a combination of genital tract and end of the digestive system found in many invertebrates and most vertebrates, except most mammals.)

Unlike most vertebrates, turtles have ribs that are short and wide, and do not wrap around the body.

In most vertebrates, digestion is a multi-stage process in the digestive system, following ingestion of the raw materials, most often other organisms.

For the first time, researchers have investigated the cheetah's extraordinary sensory abilities by analyzing the speedy animal's inner ear, an organ that is essential for maintaining body balance and adapting head posture during movement in most vertebrates.

For most vertebrates it's not immediately apparent why genome deletions and add - ons typically go hand - in - hand.

They looked specifically for genes coding the major histocompatibility complex (MHC)-- a molecule found on the surface of cells that acts as a crucial component of the immune systems of most vertebrates.

These locomotion centers are to be found in most vertebrates.

In most vertebrates, muscles associated with the lungs (intercostal muscles) work with the abdominal muscles to control breathing.

Like most vertebrates, human beings are more or less bilaterally symmetrical.

Not exact matches

Vertebrates 505 Tetrapods 395 Amniotes, 340 Mammals 220 Mammals that birth live young (i.e. non-egg-laying) Placental mammals (i.e. non-marsupials) 125 Supraprimates, bats, whales, most hoofed mammals, and most carnivorous mammals Supraprimates (primates, rodents, rabbits, tree shrews, and colugos) 100 Primates, colugos and tree shrews Primates and colugos79.6 Primates 75 «Dry - nosed» (literally, «simple - nosed») primates (a-pes, monkeys, and tarsiers) 40 «Higher» primates (or Simians)(a-pes, old - world monkeys, and new - world monkeys) «Downward - nosed» primates (a-pes and old - world monkeys) 30 A-pes 28 Great a-pes (Humans, chimpanzees, bonobos, gorillas, and orangutans) 15 Humans, chimpanzees, bonobos, and gorillas 8 Genera H - omo and Australopithecus 5.8 Contains only the Genus H - omo 2.5 Humans 2.5 Modern humans 0.5 Fully anatomically modern humans 0.2

Vertebrates 505 Tetrapods 395 Amniotes, 340 Mammals 220 Mammals that birth live young (i.e. non-egg-laying) Pl - acental mammals (i.e. non-marsupials) 125 Supraprimates, bats, whales, most hoofed mammals, and most carnivorous mammals Supraprimates (primates, rodents, rabbits, tree shrews, and colugos) 100 Primates, colugos and tree shrews Primates and colugos 79.6 Primates 75 «Dry - nosed» (literally, «simple - nosed») primates (apes, monkeys, and tarsiers) 40 «Higher» primates (or Simians)(a-pes, old - world monkeys, and new - world monkeys) «Downward - nosed» primates (apes and old - world monkeys) 30 A-pes 28 Great a-pes (Humans, chimpanzees, bonobos, gorillas, and orangutans) 15 Humans, chimpanzees, bonobos, and gorillas 8 Genera H - omo and Australopithecus 5.8 Contains only the Genus H - omo 2.5 Humans 2.5 Modern humans 0.5 Fully anatomically modern humans 0.2

If you are conceding that most marine organisms died, then you face the same founding population genetic diversity constraints limiting their ability to rapidly yield the mult - itude of observable marine vertebrate and invertebrate life in a very short time.

Amphibians are the most threatened vertebrates in the world, with over 40 % at risk of extinction.

Flammang agrees, saying what's most exciting about this is that it really underlines the idea that there is a vertebrate body plan that allows for changes that result in different kinds of animals, adding that the work «really unlocks a way of understanding the differences between organisms.»

We most easily detect a vertebrate, particularly a mammal, and assess its intentions by looking at its face.

«Among other proteins, we managed to find collagen, one of the most important proteins in the bodies of animals in general, and in vertebrates in particular.»

The cave bears had the most complex molars out of all the bears, suggesting that they may have had a highly specialized vegetarian diet, the researchers reported in Washington, D.C., today at the International Conference of Vertebrate Morphology.

«Our limited understanding of the incredible jaws of these arachnids, together with terminology that is unstandardized and even contradictory, has hindered our ability to classify them and figure out where they fit in the arachnid tree of life because, much like the cranial anatomy of vertebrates, the jaws of solifuges contain most of the relevant information,» said Lorenzo Prendini, a curator in the Museum's Division of Invertebrate Zoology and an author on the paper.

From the perspective of a vertebrate morphologist, humans lack one of the most obvious features of animals adapted for serious speed: a tail.

The extinction that ended the Devonian Era 359 million years ago created opportunities quickly exploited by a formerly rare and unremarkable group of fish that went on to become — in terms of the sheer number of species — the most successful vertebrates (backboned animals) on the planet today: the ray - finned fish.

Amphibian chytridiomycosis, caused by infection with the Batrachochytrium dendrobatidis fungus, is the most devastating vertebrate disease on record.

In the most thorough study of its kind, scientists have now analyzed global patterns of island vertebrate extinctions and developed predictive models to help identify places where conservation interventions will provide the greatest benefits to threatened island biodiversity.

The mammals are the class of vertebrate animals characterized by the production of milk in females for the nourishment of young, from mammary glands present on most species and specialized skin glands in monotremes that seep or ooze milk; the presence of hair or fur; specialized teeth; three minute bones within the ear; the presence of a neocortex region in the brain; and endothermic or «warm - blooded» bodies.

Humans — along with most other living vertebrates — belong to the same group as bony fish, whose skeletons are made of bone.

«In Japan, many important vertebrate fossils have been discovered by amateurs because most of the land is covered with vegetation, and there are few exposures of fossil - bearing Cretaceous rocks.

Collagen is the most abundant protein in vertebrates, providing external support for cells.

Although most Komodo dragons in the wild continue to reproduce sexually, this giant lizard is one of a growing number of vertebrates that reproduce parthenogenetically in captivity.

When the researchers built an evolutionary tree from these comparative data, the amphioxus branched off earliest, followed by tunicates and larvaceans, with vertebrates being the most recent to evolve, the team reports 23 February in Nature.

Read previous Zoologger columns: Horror fly returns from the dead, Even parasitic worms have a divided society, Shrimp plays chicken with its sex change, Death by world's longest animal, Live birth, evolving before our eyes, Sympathy for the piranha, The world's most fecund vertebrate, Whale - eater's helpful sulphur - powered guests, Horror lizard squirts tears of blood, Secret to long life found... in a baby dragon

Some animals — for instance the cyclothone, the most common vertebrate in the world — even use light as camouflage during the day as they move about more than 1,000 feet beneath the surface.

Most of the remains include only bits of bone and are from individuals of various sizes, says Hans - Dieter Sues, a vertebrate paleontologist at the Smithsonian Institution's National Museum of Natural History in Washington, D.C..

«Based on the phylogenetic relationships and the presence of tetrachromacy in recent tetrapods it is most likely that the stem species - of all terrestrial vertebrates had photo receptors to detect blue, green, red and uv,» says Dr. Christian Fischer of the University of Göttingen.

For example, bristlemouths, which are among the most abundant vertebrates on Earth, are represented by only 21 species.

To illuminate the origins of chordate and vertebrates, we generated a draft of the protein - coding portion of the genome of the most studied ascidian, Ciona intestinalis.

«This is evidence of the most northerly record for primitive bears, and provides an idea of what the ancestor of modern bears may have looked like,» says Dr. Xiaoming Wang, lead author of the study and Head of Vertebrate Paleontology at the Natural History Museum of Los Angeles County (NHMLA).

Modern birds, a group called Neornithes (a name that combines neo and a variant of ornis, the Greek words for «new» and «bird,» respectively) are the most diverse and widespread vertebrates on Earth today.

They compared 146 genes in many chordates, including hagfish and lamprey (considered the most primitive vertebrates) and larvaceans, which are sea - faring relatives of sea squirts.

«This is one of the most comprehensive studies that attempts to date when these evolutionary divergences happened,» says Luis Chiappe, a vertebrate paleontologist at the Natural History Museum of Los Angeles County in California, who wasn't involved in the new research.

These fish have a travelling eye and swim on their sides in what is the most extreme example of vertebrate asymmetry — now we know how they develop this useful trait

Although many vertebrate species have diversified on the island after arriving by overwater «sweepstakes» dispersal, most — such as the flying lizards and black - crested macaque monkeys — have speciated in such a way that their geographic ranges are non-overlapping, with their ranges meeting like pieces in a jigsaw puzzle.

In this primitive two - room shed, Congdon has conducted some ofthe most sophisticated life - history studies of long - lived vertebrates — research that could upend our theories about how animals grow old andmight one day help unlock secrets of human longevity.

Read previous Zoologger columns: How weakness makes the crayfish stronger, The heaviest animal in the air, Ancient air - breathing, triple - jawed fish, Horror fly returns from the dead, Even parasitic worms have a divided society, Shrimp plays chicken with its sex change, Death by world's longest animal, Live birth, evolving before our eyes, Sympathy for the piranha, The world's most fecund vertebrate.

«Although our analysis suggests that the new specimen may represent the most phylogenetically basal Cretaceous bird known to date, this phylogenetic hypothesis should be treated with caution given the incomplete preservation of the skeleton and low phylogenetic support values,» said lead author Dr. WANG Min, Institute of Vertebrate Paleontology and Paleoanthropology (IVPP) of the Chinese Academy of Sciences.

«The surprising find from Elko County in northeastern Nevada is one of the most completely preserved vertebrate remains from this time period ever discovered in the United States,» emphasizes Carlo Romano, lead author of the study.

Image - forming eyes are found in certain mollusks, bi-valves, most arthropods and nearly all vertebrates.