evolution 2 9

Tag: "evolution" at biology news

Scientists discover interplay between genes and viruses in tiny ocean plankton

...hnology, the research is uncovering a new facet of evolution and helping scientists see how microbes exploit changing conditions, such as altered light, temperature and nutrients. "These results tell us that even the smallest organisms show genetic variation related to the environment in which they exist," sa...

Ahead of the game

...nt implications for debates surrounding behavioral evolution and the practices that eventually allowed modern humans like ourselves to displace other closely-related species. "Each population was equally and independently capable of acquiring and exploiting critical information pertaining to animal availabil...

The evolution of food plants: Genetic control of grass flower architecture

...discusses the ramosa pathway in the context of the evolution of plant development. "The grasses are a premier model system for evolution of development studies in higher plants: there is tremendous diversity in inflorescence morphology, ...

UCSD biologists find new evidence for one-way evolution

...ductive mechanism and only inferred the pattern of evolution based on the traits of living species, we would ha...tudies that use current methods to reconstruct the evolution of complex traits often fail to support it. This is because it is often difficult to reconstruct cha...

Ancient DNA provides clues to the evolution of social behavior

... Hadly asserts, and could provide insight into the evolution of social behavior in other animals, including ant... modern and ancient DNA,'' Chan explains. Social evolution Determining how the colonial tuco-tuco's diversity got so low only solves part of the mystery. ''T...

Study finds evolution doesn't always favor bigger animals

... fossil record, which allows us to reconstruct the evolution of body size in great detail," said Gene Hunt, who..., paving the way for a better understanding of the evolution of body size in fossil organisms as well as in environments that are now being impacted by global wa...

Behavioral studies show UV contributes to marsupial color vision

...ovide an opportunity to re-examine theories on the evolution of this key sensory capacity. ...

Animals can change genes quickly to keep up with viral ingenuity

... The new research provides evidence for such rapid evolution of some RNAi genes: The researchers found that som... than 97% of all other fruit fly genes. This rapid evolution illustrates the vital role of RNAi in antiviral defense, and it shows that these genes can be centra...

UC San Diego partners with Venter Institute to build marine microbial genomics cyberinfrastructure

...he environment, as well as permit insight into the evolution of life on Earth. The UCSD Division of the California Institute for Telecommunications and Information Technology (Calit2) will lead the project in partnership with J. Craig Venter Institute (Venter Institute) in Rockville, MD, and UCSD's Center for ...

Attractive birds more immune against bird flu

...t are heritable. This leads to the question of why evolution did not select the same appearance and good health for all individuals. Is there something in the environment that is constantly changing and can govern the genetics of appearance and health, leading, instead, to diversity? "More and more evidence ...

Mouse to man: The story of chromosomes

...ouse chromosome 11 offers unique insights into the evolution of the genome of higher mammals, said a Baylor Col...ment in the genome is the predominant force in the evolution of genomes," said Lupski. That is particularly evident in this report that allows carefully comparis...

On a fly's wing, scientists tally evolution's winners and losses

...ouse chromosome 11 offers unique insights into the evolution of the genome of higher mammals, said a Baylor Col...ment in the genome is the predominant force in the evolution of genomes," said Lupski. That is particularly evident in this report that allows carefully comparis...

Earth Rx: A microbial biotechnology prescription for global environmental health

...plification of microbial DNA and a new view of the evolution of organisms based on their ribosomal RNA. These technologies have advanced into high-throughput genomic and proteomic protocols that can detect specific genes and their metabolic functions with great precision and detail. Other methods can now rec...

Minor mutations in avian flu virus increase chances of human infection

...l receptor specificity that can be used to map the evolution of new human pathogenic strains, such as the H5N1 avian influenza, and could prove invaluable in the early identification of emerging viruses that could cause new epidemics." Other authors of the study include James Stevens of Scripps Research; Ola ...

Hantavirus found in African wood mouse

...nificantly advance the understanding of hantavirus evolution and of rodent evolution." The researchers originally collected hundreds of African rodents during a study of the variability of Lassa virus--another rodent-borne virus--in its hosts and in humans. They started looking for an African hantavirus in th...

NHGRI announces new sequencing targets

...r understanding of the factors contributing to the evolution of the human genome. The primates chosen for this "index species" effort are rhesus macacque (Macaca mulatta), marmoset (Callithrix jacchus) and orangutan (Pongo pygmaeus). In the future, NHGRI intends to add other organisms to the list of index spec...

For some young fish, early gene expression is a clear harbinger of fated lifestyle

...ry has been a highly selected attribute during the evolution of brown trout populations. The findings also indicate that such striking differences in gene expression profiles are probably controlled by only a few major genes. In addition, the authors showed that while there is a large diversity in gene expre...

Insects that produce males from unfertilized eggs reveal a surprising cellular feat

...ications for understanding basic cell biology, the evolution of Hymenopteran insects, and centrosomal anomalies... Hymenopteran insects. One of the key steps in the evolution of social insects, therefore, may have been the development of a mechanism for making centrosomes fr...

Researchers now able to look deep into heart to view triggers of a heart's beat

...ications for understanding basic cell biology, the evolution of Hymenopteran insects, and centrosomal anomalies... Hymenopteran insects. One of the key steps in the evolution of social insects, therefore, may have been the development of a mechanism for making centrosomes fr...

New mechanism for essential genome-wide gene silencing identified

...ith few changes in life forms that diverged during evolution millions of years ago. "In our experiments, we saw SUMO binding to histones across the genome, suggesting that if this mechanism went wrong, it could have a dramatic effect," says Berger. "We know, for example, that histones are important in a numbe...

1 2 3 4 5 6 7 8 9 10