mammal

In mammals, females are XX while males are XY so a woman should never be able to provide the necessary Y chromosome genes to produce a son.

I thought about this little book, because the author has this in common with me that for him the question of mammals has been resolved.

Any of the long, stiff hairs that project from the snout or brow of most mammals , as the whiskers of a cat .

They were able to estimate the rate at which malaria parasites would have had to diversify in order to spread to other hosts, like mammals.

Dr Simpson's analysis indicates that the relationship between dinosaurs and mammals was actually that of a diner to his lunch.

No one has ever before documented the spread of a learned behavior through a population of these marine mammals over a short period of time.

She says it's very worrisome to see such a large number of marine mammals die.

Of the one-and-a-half million fungal species on Earth, only a few hundred are capable of infecting mammals.

In Antarctica, the only mammals are those that stay for just a short time -- marine mammals like whales and seals.

Mammals are more complex still, but even they might be amenable to this sort of extinction modeling.

More mammals have become extinct in that country over the last 200 years than in any other place in the world.

Moreover, the bones in the front part of a baleen whale's lower jaw, or mandible, aren't fused as they are in other mammals.

Some scientists believe that sleep is not important by itself in mammals and birds, and is just a way to impose a quiet and immobile state.

If this dolphin is now deemed to be extinct, scientists say it would be one of the few large aquatic mammals to be wiped out in 300 years.

all that was required to evolve from early mammals , like lemurs , to humans , was a bit of fine - tuning.

One of the long stiff tactile bristles or hairs that grow near the mouth and elsewhere on the head of most mammals; a vibrissa.

That's quite a bit more than just a few mammals that we're eating, like a cow or a pig or a sheep.

The fact that capsaicin causes pain to mammals seems to be accidental.

Yet the idea that this shrill little dinosaur can survive indefinitely in a world ruled by and for mammals seems even more far-fetched.

For large and slow-to-reproduce mammals like humans, such a growth curve is, to put it mildly, unusual.

The thick, yellowish, musky fluid secreted by one of these mammals, used in the manufacture of perfumes.

Though it prefers hunting small mammals, the Arctic fox is at heart an opportunist. The Arctic is no place to be picky.

Today, this bizarre but fascinating creature is known as the platypus, one of only five extant monotremes (egg-laying mammals).

Those long, pointy teeth that hang out of the side of their mouths are designed to catch slippery fish rather than large mammals.

As it turns out , marine mammals are at the top of this food chain that we're pouring millions of tons of toxic substances into every year .

Many of the later mammals, though now extinct, were known to primitive man and were featured by him in cave painting and on bone carvings.

In animals, this part of the brain evolved around the time of the dinosaurs before mammals existed.

After all, this testosterone surge in early life contributes to the male characteristics of many mammals.

hoofed mammals having slender legs and a flat coat with a narrow mane along the back of the neck.

In theory, the mammals could be used to drag explosives up to enemy ships, while leaving friendly boats unharmed.

This mechanism of action by arsenic is not unique to yeast, as it has been shown to exist in a range of organisms from bacteria to mammals.

The region in mammals between the pleural sacs, containing the heart and all of the thoracic viscera except the lungs.

A tooth adapted FOR tearing apart flesh, especially one of the last upper premolar or first lower molar teeth in carnivorous mammals.

The hosts were captured by traps. The sucking lice on the body surface of small mammals were all collected.

A whiskered robot has been developed by British scientists with the aim of better understanding how some mammals find their way in the dark.

A few finless porpoises -- smaller, stouter mammals with blunt noses -- were moved into a reserve, along with one baiji.

Tens of thousands of fungal species infect reptiles, amphibians and other cold-blooded animals, but only a few hundred harm mammals.

Obesity and stress are likely factors for the giant land mammals' early demise in captivity, she said.

These famously feisty mammals have a coat of coarse brown or black fur and a stocky profile that gives them the appearance of a baby bear.

Now it seems that dinosaurs or other early mammals may have been the early grazers that gave grass a head start.

In mammals the main "clock" is located in a part of the brain known as the suprachiasmatic nucleus, or SCN.

The rodent is one of the most endangered mammals in North America, with less than 40 individuals found in an area less than 10 sq. km.

secreted by the kidneys that in mammals is a yellow to amber-colored, slightly acid fluid discharged from the body through the urethra.

The mark on the surface of the abdomen of mammals where the umbilical cord was attached during gestation.

Scientists knew that extremely large mammals evolved within a few million years after the end of the dinosaurs.

Objective To understand the species distribution of ectoparasitic chigger communities on small mammals in Yunnan province.

It has thick fur and produces milk for its young, yet the females lay eggs and the males produce venom - the only mammals to do so.

The larvae invade snails, develop to the next stage, emerge into the water, and invade mammals to feed and breed in the bloodstream.

Whale, dolphin and porpoise were considered to be fish, so during Lent the salted meats of these sea mammals were eaten.

When plant-eating mammals evolved they developed quite a different set of manners, relying on chewing to make food more digestible.

What they discovered was extraordinary: Giant mammals, long believed to be somewhat rare, were common across the entire planet.

Our preliminary data suggest that the abundances and distributions of locally common larger mammals seemed to have increased and expanded.

They were introduced to replace controversial organophosphates because they appeared to be harmless to mammals and people.

So far, the changes have not endangered the bison because mammals adapt easily to a changing environment, scientists say.

Among the few survivors would have been animals living in water or burrowed in the ground like turtles, small mammals and crocodiles.

generalized extinct mammals widespread during the Jurassic; commonly conceded to be ancestral to marsupial and placental mammals.

The researchers chose to investigate rats, as social mammals with cerebral activity that is similar in many ways to that of humans.

"We ain't nothing but mammals. . . " Well, some of us cannibals.

As a scientist who studies vocal communication in mammals, she decided to investigate the manipulative meow.

With a life-span of up to 30 years, they live disproportionately long lives compared with other mammals.

Any of various swift - running ruminant mammals of the family Bovidae, native to Africa and Asia and having LONG. horns and a slender build.

But for the bipedal mammals who were allowed to rise once the big lizards were finally gone, it is a matter of enduring fascination.

One thing they thought they knew, however, was that these people hunted mammoths and other large mammals until none was left.

Some or all dinosaurs may have had high aerobic exercise capacity like birds and mammals, or low aerobic exercise capacity like rep- tiles.

Scale pattern of Human hair is unitary and evenly arranged while that of mammals is varied and complicatedly arranged.

It has not been shown to cause cancer, and it passes quickly out of the bodies of humans and other mammals.

In fact, congenital adrenal hyperplasia or early administration of diethylstilbestrol are able to modify female play behavior in mammals.

In the lungs of mammals, air flows in and out of small sacs, where oxygen is extracted and carbon dioxide released.

The endangered mammals are migrating south along the Australian coast, attracting thousands of whale watchers.

Axons of the central nervous system in adult mammals do not regenerate spontaneously after axotomy.

A misfolded protein appears to be the causative agent of a number of rare degenerative brain diseases in mammals.

The platypus is one of the only two existing egg-laying mammals in the world.

But, like mammals, it had whiskers, warm blood, and, scientist suspect, a fur coat.

He echidna uses its long sticky tongue to catch ants. The echidna and the platypus are the only existing egg-laying mammals.

Barak makes most of her income by showing off her plants, which eat everything from insects and reptiles to small mammals and schnitzel.

We know that autoeroticism is widespread among mammals and that it turns up in birds and reptiles, too.

that ended up with primates that have forward - facing eyes , whereas other mammals tend to have eyes on the sides of their heads .

Though cute, in a weird way, the platypus is actually one of the few mammals that are poisonous.

If these burrows had been made recently, they would instantly be recognisable as the work of small mammals.

The septal organ is only about 1 percent the size of the main olfactory epithelium and isn't shared by all mammals.

The intestine of mammals is a complex ecosystem, where the symbiosis between the host and different resident microorganisms happens.

Bats are the only mammals to have wings and to achieve sustained flight.

any of a number of hoofed mammals superficially similar but not necessarily closely related taxonomically.

Materials are distributed throughout the body of mammals by fractal networks of branching tubes.

A much greater danger is faced by the thousands of species - including many large, photogenic mammals - living in tropical rainforests.

Debate over the cause of these extinctions has focused on the primacy of humans and climate in driving this dramatic loss of large mammals.

Ida is a link between the apes, monkeys and us with the rest of the mammals and ultimately the whole animal kingdom.

Dinosaurs may have had high resting metabolic rates like birds and mammals, or low resting rates like reptiles.

But the African crested rat and Homo sapiens are the only two mammals who use plants to make their poisons.

They are mammals in whom (6) the egg, even though placed in the uterus, has no placental relationship with the maternal organism.

Any of various predatory, flesh-eating mammals of the order Carnivora , including the dogs, cats, bears, weasels, hyenas , and raccoons .

Many villagers, especially fishermen, worship the giant mammals and believe a dead whale washing ashore is a sign of good fishing to come.

Among the mammals profiled here are the unusual and exotic spectacled bear, the capybara (the world's largest rodent), and the common llama.

Scientists in Canada say a fossil they found helps to understand how seals developed from land-based mammals.

The arboreal species has one of the longest intervals between births among mammals, typically around eight years.

Quite similar to that of mammals.

In mammals, dosage compensation is achieved by transcriptional silencing of one of the two female X chromosomes.

And several other species of mammals and birds follow the general rule in their body-movement patterns.

Play is costly in terms of energy, but evolution has made it such fun that mammals spend between 1 and 10 per cent of their time at play.

The reflex that causes goose bumps is known as horripilation and it occurs in other mammals as well.

Objective To understand the fauna of ectoparasitic sucking lice on small mammals in Yunnan Province of China.

Most subsequent generations of birds, land mammals, plants, trees and shrubs are matching the vibration of the land at this time.

These archetypal eerie animals are the only mammals that subsist solely on blood.

The Australian short-beaked echidna, a monotreme, is one of the oldest living mammals on earth.

It's an important evolutionary milestone that helped make mammals - and humans among them - one of the Earth's dominant animal classes.

Any of various small whales, porpoises, or similar aquatic mammals, especially a whale of the genus Mesoplodon, having a pointed snout.

Another problem with plastic bags is they do not biodegrade in landfills and pose a danger to many marine mammals.

Conversely, he said, mammals that live in arctic regions develop a layer of fat to insulate against the cold.

Marino and her colleagues have analyzed modern dolphins and remains of ancient marine mammals to help answer that question.

THE endangered saola, one of the world's rarest mammals, is not well acquainted with the world's scientists.

Zabojnik says their history with the mammals is helping them track the long-term environmental effects of the disaster.

However, under the oceans , Dolphins and Whales shall remain at this time the only fully conscious mammals.

In the late 1890s, sexologists considered human sexual masochism a natural evolution of that evidenced in lower mammals.

One of the ways in which dolphins are unusual among mammals is their ability to imitate sounds.

The only thing that prevented truly mega-mammals from evolving were climate and available food resources.

One of the rarest mammals in North America is staging a comeback in the mainland United States.

Dietary restriction effectively extends lifespan in mammals and decreases the incidence and progression of many age-dependent diseases.

In mammals, many hundreds of motor neurons are needed to control the variety of muscle cells used to coordinate movement.

The project's goal is to better understand the cacophony's nature and its impact on sea mammals as a way to build the case for reductions.

Other mammals are believed to contribute to the myth of the unicorn, including the narwhal, a whale with a long, spiraling tusk.

Bats are the biggest family of mammals and the only one that can fly, but are threatened by habitat loss and persecution by humans.

A few venturesome individuals occasionally turn up on the beaches of Oahu where other mammals, primarily primates. . .

This complements earlier findings that both birds and mammals can feel pain, and challenges assertions that fish are impervious to it.

Mammals is a constant temperature, vertebrates, the body has the hair, most are adopted, and by breast feeding offspring.

The tooth count was the primitive mammalian number (44) and the teeth were differentiated as are the heterodont teeth of today's mammals.

They believe it may be a "missing piece in the evolutionary story of fish, mammals and ocean ecosystems" .

Great advances have been achieved in intracytoplasmic sperm injection (ICSI) in mammals, which played important effects in many fields.

The scientists found that the maximum size of mammals began to increase sharply about 65 million years ago.

He had been following the development of gill arches, swellings around the base of the embryonic head, in mammals and reptiles.

Wind, flowing water and falling rain dominated the soundscape . Gradually insects, then mammals, could be heard again.

cattle: any of various mammals of the genus Bos, including cows, steers, bulls, and oxen, often raised for meat and dairy products.

The long hair along the top and sides of the neck of certain mammals, such as the horse and the male lion.

Researchers used computed tomography or to analyze the skulls of 190-million-year-old mammals found in a Jurassic-era fossil bed in China.

But its not just housing developments putting these mammals at risk, commercial fishing is now becoming a major threat.

There's no dinosaurs yet; just this slow, saurian, scaly, nasty, swampy place with a couple of tiny mammals hiding in the fringes.

In the human and all other mammals, the macula has developed into an organ which can easily be seen. This organ is called the cochlea .

The scientists say that the current warming could have the same effect on mammals -- and could even make humans smaller.

Dr. Tomonaga and his colleagues have found independent invasions in other mammals, including ground squirrels, guinea pigs and elephants.

Pershing says Roman's work is bound to get scientists thinking more about the role of large marine mammals in ocean ecosystems.

In the history of biological evolution, the formation of too strong in two major categories of mammals: marsupials and placental animals.

Languages are becoming extinct at twice the rate of endangered mammals and four times the rate of endangered birds.

Dinosaurs were extinct, the Himalayas were forming and a huge range of mammals thrived in vast jungles.

It will also determine which among the world's financial groups are the dinosaurs and which are the fittest mammals.

But I knew that there were examples of creatures, also mammals, that do reduce their metabolic rate such as ground squirrels and bears.

Dogs, cats, lions, bears, and a number of other mammals self-stimulate with their front paws; randy walruses use their flippers.

Marine mammals have the misfortune to be swimming aggregates of commodities that humans want : fur, oil, and meat.

Oh, well the Slow Loris is one of the absolute most cute, sweet, and shy mammals on earth.

Sucking lice are exclusively hematophagous ectoparasites of eutherian (placental) mammals, and are worldwide distribution.

small intestine: mammals in the small intestine is the longest of the digestive tract, including the duodenum, the jejunum and ileum .

But scientists discovered that camels do not sweat so much as other mammals.

Without a first line of defense--innate immunity--mammals would succumb to pathogens still unrecognized by B and T cells.

Also known as orcas, these marine mammals often use echolocation to find their prey, which usually consists of fish and squid.

A massive camera trap survey of tropical mammals around the world has returned a magical series of glimpses into animal life.

Alien mammals, including mink, wild boar, racoons, shrews and beavers, have invaded Europe to a greater extent than we thought.

With a rich array of species, including several types of large mammals, the M-K offers a unique window on wildlife.

This suggested to us that the mouse is not very representative of other mammals right from the first lineage decision.

This study overturns the long-held belief that brain size has increased across all mammals.

Most of these are shared among humans as well as mice, rats and other mammals used for comparison.

Dr Haussler wants to sequence 10, 000 vertebrates, a sixth of the total number of species of fish, amphibians, reptiles, birds and mammals.

That, in turn, wiped out the dinosaurs and made way for the rise of mammals.

And, as it turns out, those same peat areas contain twice the number of threatened mammals per acre than less carbon-rich forests.

They were followed by the emergence of fish, reptiles, mammals, ferns, conifers and flowering plants.

That technological advance allowed the zoo to create a permanent habitat for marine mammals far from the ocean.

Its research explores this exquisite differentiation program in mammals using a combination of genetic and molecular biological methods.

The results support the hypothesis that ambient temperature combined with photoperiod induce the thermogenic adjustments for small mammals.

Reptiles, dinosaurs, and mammals appeared within the next 100 million years.

In mammals, the processing of the 3' end of nuclear mRNA precursors is divided into two main steps, which are cleavage and polyadenylation.

Though more than 20 of the mammals survived, the rest were euthanized by gun shots to the head, BBC News reported.

This bacterium naturally occurs in the gut of many mammals and can be found in human breast milk.

Plastic bags kill up to one million seabirds, 100, 000 sea mammals and countless fish each year worldwide.

Neuroscientists studying mammals from voles to hyenas are discovering key correlations between brain chemicals and social strategies.

"This dependency on sea ice potentially makes polar bears one of the most at-risk large mammals to climate change, " says Mr Durner.

Trouble has closed in on these mammals in the form of equally warm-blooded and even more efficient and adaptable predators, humans.

Geneticists have by now identified a set of genes that regulate the SCN and thus the circadian rhythm among mammals.

These marine mammals, like their manatee relatives, must surface every five minutes or so for a fresh breath.

Or do they find women more appealing when they are in estrus, just as other male mammals are drawn to estrus females?

Rabies, a deadly virus infecting mammals, is spread through bite wounds laden with the saliva of an infected animal.

Dogs, usually dogs, also known as a dog, a common canine mammals.

Molecular and biochemical characterizations of FNs have been well studied in mammals, birds and amphibians.

Musk oxen are large mammals that have been around since well before the last ice age.

Prion diseases affect the brains of a number of mammals, including humans.

Firstly I analyse of the wildlife's habits and needs, by categorizing as mammals, fishes, birds, reptiles, amphibians, and insects.

All mammals use platelets to help prevent blood loss after traumatic injury.

almost all mammals have to viviparous . all the young mammals are needed to breast-feeding.

These primitive mammals were tiny and are thought to have been nocturnal.

Animals - mammals, bison and reindeer - moved across to the American side, and hunting humans followed.

An examination of the functioning of the senses in cetaceans , the group of mammals comprising whales, dolphins and porpoises.

Hundreds of thousands of sea turtles, whales and other marine mammals die every year from eating discarded plastic bags mistaken for food.

To dig up tubers and defies and defend carcasses of large mammals , they had to work collectively and create tools and strategies .

Come during whale season and see these beautiful aquatic mammals swim by for a truly unique experience.

The age of mammals had well and truly started 250 million years ago . . . . . . and then a catastrophe happened.

in the nonphysical it was in the inverse with the plants relying upon the mammals for oxygen.

Bats were long considered the primary pollinators of Ochroma, but recent research suggests arboreal mammals do most of the work.

Like other mammals, humans start terrestrial life in a maternal womb.

"Americans have no idea how wasteful these large mammals are, " Gracer says.

In work on other mammals, researchers have found an association between hormones, the frequency of copulation, and the sex of the offspring.

Complete double circulation of this cycle model called, and blood circulation channels of mammals and birds has the same pattern.

Remains of our early primate ancestors suggest birds and mammals often preyed upon our distant relatives.

The fossils offer clues to the evolution of the dinosaurs and shed new light on the rise of birds , mammals and flowering plants .

all mammals are all bones. the Health and a fur. with pulmonary respiration.

Fats and oils and their fractions, of fish or marine mammals, whether or not refined, but not chemically modified.

Besides, leaving these "advanced mammals" die in great pain and indignity constitutes brazen violation of their basic rights.

Land fauna is sparse, but even a shallow snorkel swim offshore reveals bountiful sponges, corals, crustaceans, reptiles and marine mammals.

Birds are more likely than not to practice monogamy whereas there are very few monogamous mammals.

any of various other carnivorous mammals of the family Felidae, which includes the lion, tiger, leopard, and lynx.

Mammals fared better, with two out of nine live mammals collected visibly oiled.

The ruminants are a group of herbivorous mammals that includes cattle, sheep, goats, camels, and giraffes.

Among the most threatened mammals are those only recently discovered.

In mammals, the fertilized egg or zygote undergoes cleavage (cell division without cell growth) to form a hollow ball or blastocyst.

Natural long and keep her and teach her, for others lively, everywhere is like as a matter of small mammals.

Anchovies are prey for larger fish and mammals, so he believed they may have sought refuge in the shallow waters of the marina.

Missing until recently were fossils clearly intermediate, or transitional, between land mammals and cetaceans.

Small mammals, being warm blooded, suffer hardship in the exposed and turbulent environment of the uppermost trees.

Bats are the only mammals' native to Socotra.

a true bug: long-legged predacious bug living mostly on other insects; a few suck blood of mammals.

Most concern has hitherto focused on charismatic large mammals with virtually no attention paid to the trade in hundreds of marine species.

Finally, in mammals, cohesin co localizes with the CTCF insulator protein and controls gene expression in a CTCFdependent manner.

Although natural hosts are birds, the avian influenza viruses are known to cross species barriers to infect other mammals, including humans.

The women used their tools to process all of the fish and marine mammals brought in by the men.

The software will also be used to model other mammals and birds on the island.

Large mammals are learning and changing their behavior all the time: deer, elk, bears, wolves, and yes, humans too.

DNA evidence shows that the closest living relatives of elephants are manatees , aquatic mammals found in the Atlantic Ocean.

Professor Owen has subsequently extended the same generalization to the mammals of the Old World.

The Thai culture holds the massive animals in high esteem, so much so that the tusked mammals have their own national holiday.

placental mammals having hooves with an odd number of toes on each foot.

The midbraIn, a major sensory Integration centre In other vertebrates, serves primarily to lInk the hIndbraIn and forebraIn In mammals.

There is strong evidence that this infectious agent promotes diseases of both plants and mammals, which is very rare.

The area is home to a rich variety of marine life as well as rare birds and mammals.

Each kind of mammals, birds and most reptiles, amphibians animals and fish are in need of sleep to maintain normal life activities.

It's controversial, as most mammals use fur to protect them from the sun.

Kilimanjaro is surrounded by mountains, live there many mammals, some of them to the brink of extinction or species.

latter part of the alimentary canal of mammals, including the caecum, appendix, colon and rectum.

That second scoop gave mammals more memory and a wider range of emotions.

Red foxes are one of Canada's most widespread mammals, found in all provinces and territories.

A second kind, the seal, has produced what is probably the greatest population of large carnivorous mammals on Earth.

Similarly, the extinction of the dinosaurs left areas of living space wide open, giving mammals their lucky break.

And in a much-celebrated first documented example of tool use in marine mammals, a family of dolphins in Australia uses sponges to hunt.

In mammals, coding sequences are also methylated, possibly reflecting the presence of transposons in gene introns.

For mammals, apparently, being excluded from a group can be dangerous, even deadly.

Kininogens, the precursors of bradykinins, ubiquitously exist in vertebrates, including mammals, birds, amphibians, and fishes.

Nevertheless, Prof Barnosky said it was not too late to save these critically endangered mammals and other such species.

It is quite a rare thing in mammals, but common in birds, reptiles, and fish.

The ecological effects of different exotic taxa like mammals, birds, invertebrates and plants on native birds are reviewed in this paper.

The same testosterone surges and streaks of success and failure can be seen in bulls, stags and other sexually competing male mammals.

Fall, have the habits of animals hibernate body began to change, mammals began to reserve the winter food.

He pointed out that the offspring of all mammals, including humans, can experience developmental defects during gestation.

The snake now joins a list of declining populations of animals, including fish, amphibians, reptiles, birds, and mammals.

A search for analogous genes uncovered a similar role for the Hippo complex in mammals - organs grow larger than they should.

The researchers' work, done on rodents, builds on findings that all mammals, including humans, make brain cells throughout their lives.

The brain is a complex combination of neocortex (unique to humans) and older structures inherited from mammals and reptiles.