Tag Archives: dna
We all have hundreds of DNA flaws
7 December 2012 Last updated at 04:16 ET By Helen Briggs BBC News Everyone has on average 400 flaws in their DNA, a UK study suggests. Most are “silent” mutations and do not affect health, although they can cause problems when passed to future generations. Others are linked to conditions such as cancer or heart disease, which appear in later life, say geneticists.
Ethiopians and Tibetans thrive in thin air using similar physiology, but different genes
ScienceDaily (Dec. 6, 2012) Scientists say they have pinpointed genetic changes that allow some Ethiopians to live and work more than a mile and a half above sea level without getting altitude sickness. The specific genes differ from those reported previously for high-altitude Tibetans, even though both groups cope with low-oxygen in similar physiological ways, the researchers report
Ethiopians and Tibetans thrive in thin air using similar physiology, but different genes
ScienceDaily (Dec. 6, 2012) Scientists say they have pinpointed genetic changes that allow some Ethiopians to live and work more than a mile and a half above sea level without getting altitude sickness. The specific genes differ from those reported previously for high-altitude Tibetans, even though both groups cope with low-oxygen in similar physiological ways, the researchers report
Gene network illuminates stress, mutation and adaptation responses
ScienceDaily (Dec. 6, 2012) For much of her professional life, Dr. Susan Rosenberg has studied the puzzling response of bacteria to stress and the mutations that result
Childhood trauma leaves mark on DNA of some victims: Gene-environment interaction causes lifelong dysregulation of stress hormones
ScienceDaily (Dec. 2, 2012) Abused children are at high risk of anxiety and mood disorders, as traumatic experience induces lasting changes to their gene regulation.
Inflammation may be a cause of plaque buildup in heart vessels
ScienceDaily (Dec. 2, 2012) Fifteen new genetic regions associated with coronary artery disease have been identified by a large, international consortium of scientists — including researchers at the Stanford University School of Medicine — taking a significant step forward in understanding the root causes of this deadly disease. The new research brings the total number of validated genetic links with heart disease discovered through genome-wide association studies to 46
Most of the harmful mutations in people arose in the past 5,000 to 10,000 years
ScienceDaily (Nov. 28, 2012) A study dating the age of more than 1 million single-letter variations in the human DNA code reveals that most of these mutations are of recent origin, evolutionarily speaking
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