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Tag: "relatives" at biology news

HIV-1's high virulence might be an accident of evolution

...IV-2 evolved from a virus that infects long-tailed relatives of baboons called sooty mangabeys. While HIV and SIV strains all infect T cells that are critical for a functional immune response, SIV usually does so without causing serious damage in their natural primate hosts. Of more than 30 SIVs that have be...

Scientists' cell discovery unearths evolutionary clues

...s. "Amoebas are some of the closest single cell relatives of animals so understanding how they work and evolve is important because it helps us to understand how animals evolve. We have developed a new model system for the study of the evolution of forms. "We have written the dictionary. Now we know wha...

Inheriting a tendency to brain infection

...es simplex encephalitis had parents who were blood relatives --often first or second cousins--and were therefore at higher than normal risk of inheriting two copies of a faulty gene. In 2005, Casanova later identified a 15-year-old boy who developed brain damage due to herpes simplex infection. Casanova fou...

Jumping gene could provide non-viral alternative for gene therapy

...sects. The piggyBac transposon, which has close relatives in the human genome, is widely used to genetically modify insects. Sleeping Beauty has been used to correct hereditary diseases, including hemophilia, in a mouse model. For this study, researchers used transposons to deliver an antibiotic-resistan...

New genetic analysis forces re-draw of insect family tree

... that bees, wasps and ants are in fact the closest relatives to the more distantly related (or 'basal') species, it appears more likely that the genetic basis for eusociality may have evolved only once, and was lost in the common ancestor of beetles, moths, and flies." The researchers used the genomes of si...

Singing for survival

... widely demonstrated in some of our closest living relatives - the apes." Gibbons are renowned amongst non-h...s appear to use loud 'long-distance' calls to warn relatives in neighbouring areas and that those groups responded by joining in the singing, matching the correc...

Dinosaurs -- stones did not help with digestion

... at least be a gastric mill such as birds, today's relatives of the dinosaurs possess. Among these the ostrich is the largest herbivore. For their investigations, the scientists therefore offered stones such as limestone, rose quartz and granite as food to ostriches on a German ostrich farm. After the ostri...

Study finds the air rich with bacteria

...found in soil. They also found naturally occurring relatives of microbes that could be used in bioterrorist attacks -- although many of these relatives are harmless. "Before this study, no one had a sense of the diversity of the microbes in the air,...

Perceived facial similarity in children is an estimate of kin recognition

...he probability that two children are close genetic relatives according to a new study recently published in Journal of Vision, an online, free access publication of the Association for Research in Vision and Ophthalmology (ARVO). Participants in the study judged pairs of pictures of children, half of which p...

Researchers give name to ancient mystery creature

...h resemble in superficial ways, those of primitive relatives of ungulates, the group of mammals which includes horses and cows. But despite that link to ungulates, which are traditionally herbivores, Horolodectes was thought to have dined on small insects and grubs. "It had sharp crests on the teeth which form...

A new target for painkillers

...from two cone snail species that eat worms, unlike relatives that eat fish or snails and occasionally deliver a fatal sting to a human fisherman. -- RgIA is from the species Conus regius, which measures 1.6 to 2.8 inches in length and lives from Georgia southward along Central America to Brazil's central co...

A buffet for early human relatives

... testing fossil teeth, and showed that early human relatives varied their diets with the seasons 1.8 million ye...rbon isotope ratios reveal the extent to which the relatives of early humans ate so-called C3 plants, which include fruit and leaves from trees in both the fores...

New bird discovered on unexplored Columbian mountain

... plumage, the new species differs from its closest relatives in having a black back and no white markings on its wings. It also is found in other nearby mountains in Colombia's eastern Andean range. Genetic, morphological and vocal studies have confirmed its identity as a new taxon. "Before we began this st...

Scientists discover new species of distinctive cloud-forest rodent

...irrel and looks a bit like one, except its closest relatives are spiny rats. The nocturnal, climbing rodent is beautiful yet strange looking, with long dense fur, a broad blocky head, and thickly furred tail. A blackish crest of fur on the crown, nape and shoulders add to its distinctive appearance. Isot...

UF scientists discover new genus of frogmouth bird in Solomon Islands

...ame genus (Homo), while chimpanzees are our living relatives from a closely related genus (Pan), but that we share the same taxonomic family (Hominidae) with our chimp cousins. The Solomon Islands Frogmouth differs from other frogmouths in a number of significant ways. First, it is probably not as accomplis...

OHSU lab finds meth receptor that could lead to therapy

... Grandy’s lab found TAAR1 is activated by chemical relatives of meth known as phenylethylamines. The messenger RNA that codes for TAAR1 is expressed throughout the brain, including areas involved in motivation and drug craving, olfaction ?the sense of smell ?and temperature regulation, to name a few. "With ...

DNA ends: Common tool, different job

...blad laboratory searched the Protein Data Bank for relatives of Stn1, they dug up Rpa2, the middle subunit of the RPA complex. In particular, Stn1 and Rpa2 share similarities in a region known as oligonucleotide/oligosaccharide-binding fold or OB-fold, a protein fold that is commonly used to recognize and bind...

Paleontologists discover new mammal from Mesozoic Era

... between those of modern mammals and those of near relatives of mammals, also known as mammaliaforms. "This new fossil offers a rare insight in the evolutionary origin of the mammalian ear structure," said Zhe-Xi Luo, a paleontologist at the Carnegie Museum of Natural History (CMNH) in Pittsburgh, Pa. "Evol...

World's largest flower evolved from family of much tinier blooms

...f DNA to determine that the giant flower's closest relatives are in the Euphorbiaceae family, many of which have blossoms just a few millimeters in diameter. "The power of nucleic acid comparisons is revealed as well as ever in this stunning deduction," says noted botanist Peter H. Raven, president of the Mi...

Darwin's famous finches and Venter's marine microbes

...g, "By looking at all these very distant microbial relatives we can understand more even about human kinases and their relationship to cancer and other diseases. We go out into the ocean, we find all this diversity and analyzing what’s new and what’s not new reflects back on the things we thought we knew well....

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