Science News for May 12, 2002

Parasite or partner? Study suggests new role for junk DNA

Scientists discovered that some human LINE-1 elements, known as junk DNA, can jump into chromosomes with broken strands and repair the damage. This finding raises questions about the potential benefits of these ancient genetic elements to human cells.

SourceMichigan Medicine - University of Michigan·JournalNature Genetics·DateMay 12, 2002

Family history of hypertension is related to maladaptive behavioral responses

Research reveals that family history of hypertension is associated with exaggerated physiological responses to stress and learned maladaptive behavioral patterns. Offspring of hypertensive parents exhibit higher resting heart rates, increased blood pressure, and more negative verbal and nonverbal behaviors during stressful tasks.

SourceAmerican Psychological Association·JournalHealth Psychology·DateMay 12, 2002