Scientists have mapped the zebrafish genome using a radiation hybrid technique, allowing for matching of candidate genes with genetically mapped mutations. The map provides valuable insight into human development and has potential applications in understanding genetic diseases.
A new report by Robert H. DuRant shows a significant link between sexual experience and violent behavior in North Carolina high school males. Males who have been involved in pregnancy are more likely to engage in behaviors increasing their risk of injury or death, such as fighting, carrying a gun to school, and using illegal substances.
A new study found that male prairie voles' brains produce a compound called citrulline, which is associated with aggressive behavior in mice. However, the study suggests that this compound may not be present in monogamous male voles, which could help explain their unique mating behaviors.
A University of Michigan study found that older adults tend to use the left front side of the brain, specifically the dorsolateral prefrontal cortex, when performing concurrent tasks. This is a difference from younger adults who rely more on visual cortices for task switching.
A study by Brown University researchers found that overweight women who used home exercise equipment lost significantly more weight than those without the equipment, with an average of 16.3 pounds lost compared to 8.1 pounds. The equipment also helped participants maintain a higher level of exercise throughout the study.
The CARDIA Study found that high-fiber diets are associated with lower insulin levels, weight gain, and other cardiovascular disease risk factors in healthy, young black and white adults. The study of nearly 3,000 participants over 10 years revealed a significant inverse association between fiber consumption and CVD risk factors.
Scientists develop a new process using chromium chloride to produce hundreds of thousands of compounds in just one experiment. The innovation enables faster screening of industrial products, including drugs and dyes.
Researchers at Vanderbilt University Medical Center have identified a key gene in acute leukemia, suggesting potential new treatments. The study found that the inv(16) translocation collaborates with AML-1 to turn genes off, even when they should be on.
Researchers have discovered iron-rich rock formations dating back 2.3 billion years, indicating the presence of land-based life and atmospheric oxygen during that time. The findings, made by Dr. Hiroshi Ohmoto and Nick Beukes, suggest that life on Earth existed much earlier than previously thought.