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Articles tagged with: genetics

Written By: grant on April 16, 2014 No Comment

Nature reveals how parents who live through something horrible can have children who inherit depression and anxiety – biologically, through their RNA – from traumas they never personally experienced:

A study published this week in Nature Neuroscience finds that stress in early life alters the production of small RNAs, called microRNAs, in the sperm of mice (K. Gapp et al. [...]

Written By: grant on April 8, 2014 No Comment

Science Daily tries to find the evolutionary roots of …oooh, shiny! I’ll finish this tomorrow:

From an evolutionary standpoint, impulsivity makes sense: Our ancestors should have been inclined to seek immediate rewards when the next day was uncertain.

Procrastination, on the other hand, may have emerged more recently in human history. In the modern world, we have many distinct goals [...]

Written By: grant on March 31, 2014 No Comment

Science Daily twists the archaeological order of things around a little. Humans came out of Africa, humans in Africa have domesticated cattle for thousands of years, the easy assumption is that cattle were first domesticated in Africa and kind of moved out with us into the Fertile Crescent, where they helped us settle down and build the first cities. Fresh [...]

Written By: grant on February 18, 2014 No Comment

Nature examines a DNA test on a “Clovis boy,” whose DNA proves that 12,000 years ago, the ancestors of today’s Native Americans were already here:

…[T]he boy’s genome sequence shows that today’s indi­genous groups spanning North and South America are all descended from a single population that trekked across the Bering land bridge from Asia (M. Rasmussen et al. Nature [...]

Written By: grant on December 9, 2013 No Comment

Shades of Philip Larkin…. Washington Post has more on how mice, at least, pass fear down with their DNA:

In the experiment, researchers taught male mice to fear the smell of cherry blossoms by associating the scent with mild foot shocks. Two weeks later, they bred with females. The resulting pups were raised to adulthood having never been [...]

Written By: grant on November 21, 2013 No Comment

DNA analysis presented at the Royal Society in London shows, Nature says in the most delicate way possible, that ancient humans were getting it on more than we suspected:

The ancient genomes, one from a Neanderthal and one from a member of an archaic human group called the Denisovans, were presented on 18 November at a meeting on ancient DNA [...]

Written By: grant on August 1, 2013 No Comment

BBC reports on the struggle to develop an early blood test for Alzheimer’s:

A technique published in the journal Genome Biology showed differences in the tiny fragments of genetic material floating in the blood could be used to identify patients.

The test was accurate 93% of the time in trials on 202 people.

…[Alzheimer's] starts years before symptoms appear and it is [...]

Written By: grant on July 10, 2013 No Comment

Slate has printed his controversial plan to live up to the promise of gene science without the industrial agriculture downside:

The GMO story has become mired in the eco-wrecking narrative of industrial agriculture, and that is too bad for those who understand the real risks of climate change and discern our desperate need for innovation. And while the blue-sky [...]

Written By: grant on April 3, 2013 No Comment

Nature, in what was almost certainly not an April Fools’ gag, reports that there’s genetic evidence, now, that Polynesians traveled to the Amazon in days gone by – because old Brazilians share DNA with South Pacific islanders:

Indigenous people that lived in southeastern Brazil in the late 1800s shared some genetic sequences with Polynesians, an analysis of their remains [...]

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