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Tag: "density" at biology news

Camera Traps Catch Eye of the Tiger

...d rainforest. The cameras will also help provide a density estimate of tigers in various habitat types and determine whether there are adequate prey species for tigers to subsist. The results could have significant implications for species and forest preservation here and around the world. "Sumatran tigers ...

Genrate: a generative model that finds and scores new genes and exons in genomic microarray data

...iple conditions (e.g. tissues) and co-location and density of probes in DNA sequence data. GenRate balances probabilistic evidence derived from different sources and outputs scores (log-likelihoods) for each gene model, enabling the estimation of false-positive and false-negative rates. The model has a numb...

Bone Density Recovers After Teens Stop Injected Contraceptive

Lower bone density appears to recover in adolescent females once they...me Depo-Provera, experience a loss of bone mineral density during the time they are using the contraceptive. Because women are developing a large amount of the...

International HapMap consortium expands mapping effort

...tion on the HapMap samples. This will increase the density of SNP "signposts" across the genome from the current average of one every 3,000 bases to about one every 600 bases. "This will help us create a far more powerful HapMap than we ever imagined. We sincerely thank all those who are giving their time, ...

Novel ultrafast laser detection of cancer cells also may improve understanding of stem cells

...ams are reinforced or thwarted by the position and density of the mitochondria. "The pictures we get from normal and cancer cells are very different," says Gourley. "Mitochondria conspire to cluster around the nucleus and work together to supply energy to the healthy, functioning cell. In contrast, the mito...

Introduced foxes transformed vegetation on Aleutian Islands from lush grasslands to tundra

...islands," he said. The researchers found that the density of breeding seabirds on fox-free islands was two orders of magnitude higher than on fox-infested islands. The resulting difference in nutrient inputs was reflected in soil phosphorus levels that were more than three times higher on fox-free islands. ...

Man and mouse share genome structures

... tools. Most exciting to Bernstein is the unusual density of histone tags spread over the regions of genome containing the HOX genes, which are key regulators of development. "In most of the genome, we see short stretches associated with activated histones," Bernstein said. "However, in the HOX regions, we...

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