The evolution of dog breeds now mapped

When people migrate, Canis familiaris travels with them. Piecing together the details of those migrations has proved difficult because the clues are scattered across the genomes of hundreds of dog breeds. However, in a new report, researchers have used gene sequences from 161 modern breeds to assemble an evolutionary tree of dogs. The map of dog breeds, which is the largest to date, unearths new evidence that dogs traveled with humans across the Bering land bridge. …

Read More...

Comments Off on The evolution of dog breeds now mapped

Researchers make tool for understanding cellular processes more useful

Researchers have developed methods to use data from FRAP, an experiment used to study how molecules move inside cells, in ways it’s never been used before. …

Read More...

Comments Off on Researchers make tool for understanding cellular processes more useful

The Secret Power of the Cell’s Waste Bin

Trash collectors in the cell moonlight at the controls of the genetic machinery. …

Read More...

Comments Off on The Secret Power of the Cell’s Waste Bin

33 percent of seafood sold in six DC eateries mislabeled, study finds

Scientists used a powerful genetic technique to test seafood dinners sold in six District restaurants and found 33 percent had been mislabeled. The swaps, they found, were mostly with closely related species, say the investigators. …

Read More...

Comments Off on 33 percent of seafood sold in six DC eateries mislabeled, study finds

Solving a cell membrane mystery

Scientists have developed new fluorescent probes that prove the existence of cell membrane structures called ‘lipid rafts’, allowing researchers to study how toxins and viruses invade cells. …

Read More...

Comments Off on Solving a cell membrane mystery

Lyme disease researchers seek consensus as number of cases grows

Scientists have built a large body of knowledge about Lyme disease over the past 40 years, yet controversies remain and the number of cases continues to rise. In the United States, reported cases of Lyme disease, which is transmitted from wild animals to humans by tick bites, have tripled in the past 20 years. A multitude of interacting factors are driving the increase in Lyme disease cases, but their relative importance remains unclear.

Read More...

Comments Off on Lyme disease researchers seek consensus as number of cases grows

What can we learn from dinosaur proteins?

Researchers recently confirmed it is possible to extract proteins from 80-million-year-old dinosaur bones. The discovery sparks hopes for new insights about evolution and environmental change and could even offer useful clues for drug discovery or the search for extraterrestrial life. …

Read More...

Comments Off on What can we learn from dinosaur proteins?

The Radiohead ant: A new species of ‘silky’ ant grows fungus gardens for food

A new species of silky ant has been named after the famous British band Radiohead in honor of the musicians’ environmental efforts, especially in raising climate-change awareness. Two scientists report the discovery of three new species in a detailed revision of this previously poorly known genus of fungus-farming ants. …

Read More...

Comments Off on The Radiohead ant: A new species of ‘silky’ ant grows fungus gardens for food