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Tag: "chimp" at biology news

Study Links Ebola Outbreaks To Animal Carcasses

...Republic of Congo. Of these carcasses, 21 gorilla, chimp and duiker carcasses were tested for the Ebola virus, with 14 samples being found positive. In 11 cases, instances of human infection were directly linked to gorilla, chimpanzee and duiker carcasses. To prevent future outbreaks from becoming health ...

Retrovirus struck ancestors of chimpanzees and gorillas millions of years ago, but did not affect ancestral humans

...k DNA, found many copies of a gene sequence in the chimp and gorilla genome that didn't appear anywhere in the human genome. They translated that genome sequence into its corresponding protein, and discovered that it was the remnant of a retrovirus, a type of virus that copies its genetic information into ...

Chimp genome reveals a retroviral invasion

...was significantly greater than between gorilla and chimp -- even though slightly more evolutionary time separates gorilla and chimp than macaque and baboon. When a retrovirus reproduces, identical copies of LTR sequences are create...

Big differences in duplicated DNA distinguish chimp and human genomes

...itute investigator, and his colleagues studied the chimp genome, looking for large-scale segmental duplicat...duplications into three groups: those found in the chimp but not the human, those found in the human but not the chimp, and those found in both species. Amon...

Gene Expression in the Aging Brain

...nges, and whether the divergence between human and chimp patterns was the direct result of selection, or was an inevitable consequence of some other difference in brain evolution. The patterns seen in this study also provide a starting point for understanding the network of genetic changes in aging, and ma...

Navigating the brain for sense of direction as paradigm for higher cognitive functions

...nges, and whether the divergence between human and chimp patterns was the direct result of selection, or was an inevitable consequence of some other difference in brain evolution. The patterns seen in this study also provide a starting point for understanding the network of genetic changes in aging, and ma...

Carnegie Mellon scientists create PNA molecule with potential to build nanodevices

...nges, and whether the divergence between human and chimp patterns was the direct result of selection, or was an inevitable consequence of some other difference in brain evolution. The patterns seen in this study also provide a starting point for understanding the network of genetic changes in aging, and ma...

Wild Gorillas Handy with a Stick

...ster). After spotting a shell mound, Beatty saw a chimp “come ambling round a bend bearing an armful of dried palm nuts,?sit down beside a rock, select a nut, place it on a flat rock surface, and pound it with another rock to extract the meat. Thirty years passed before primatologists would describe the s...

Genetic study of Neanderthal DNA reveals early split between humans and Neanderthals

...the comparison of the Neanderthal to the human and chimp genomes enabled the investigators to estimate the human-Neanderthal divergence timeline. The scientists also used data from the HapMap genome project to understand the relationship between modern human diversity and the Neanderthal sequence. Their ...

Unraveling where chimp and human brains diverge

...n brain fires like a 12-cylinder engine, while the chimp brain works more like a 6-cylinder engine," explained Geschwind. "It's possible that our genes adapted to allow our brains to increase in size, operate at different speeds, metabolize energy faster and enhance connections between brain cells across d...

E. coli bacteria migrating between humans, chimps in Ugandan park

...ng in Kibale National Park, Uganda. One of the two chimp groups has been the focus of two decades of research by international teams of scientists. The other is regularly visited by employees of a local tourism venture. Goldberg’s team compared strains of E. coli in the chimps to those of the Ugandans e...

Gene study shows three distinct groups of chimpanzees

...vided about 250,000 years ago. "Even though the chimp genome has been sequenced, it's amazing how little we know about their evolution and the level of variation within chimpanzees," said Przeworski. "These are our nearest relatives, closer to humans than they are to gorillas, yet we know so little abou...

UF scientists discover new genus of frogmouth bird in Solomon Islands

...are 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 accomplished of a flier because its eight tail-feathers, instead of the typical 10 to 12 on other frogmouths, curtai...

Analysis of rhesus monkey genome uncovers genetic differences with humans, chimps

...aca mulatta) with that of human (Homo sapiens) and chimp (Pan troglodytes), the primate most closely relate...aque genome, combined with the availability of the chimp and human genomes, provides researchers with another powerful tool to advance our understanding of h...

Ancient retrovirus sheds light on modern pandemic

...the sequencing of the chimpanzee genome. "When the chimp genome was sequenced, a team of scientists at the ...r found the largest difference overall between the chimp and human genomes was the presence or absence of PtERV1," Emerman said. "Chimps have 130 copies of P...

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