9 posts tagged with evolution and DNA.
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The Pit of Bones

Baffling 400,000-Year-Old Clue (NYT) to Human Origins: The pit of bones hides our oldest DNA.
posted by homunculus on Dec 6, 2013 - 7 comments

Eating the plate instead of the food

With the possible exception of the Nobel awards, physicists seem to get all the press these days, whether they're doing quantum level work at the LHC, or cosmology via the latest satellite data. Biologists, not so much. It's too bad, because Richard Lenski is running one of the great evolutionary experiments of our time, and it's producing interesting results. [more inside]
posted by CheeseDigestsAll on Oct 8, 2012 - 34 comments

cluck cluck cluck BAWK! ROAR!!

When and if the dinochicken is created, Horner looks forward to bringing it out on a leash during lectures. (book)
posted by Pants! on Mar 15, 2009 - 24 comments

Darwin, extended

The "blind watchmaker" may not be as blind as we thought. A team of scientists at Princeton University discovers that organisms are not only evolving, they're evolving to evolve better, using a set of proteins to "steer the process of evolution toward improved fitness" by making tiny course corrections.
posted by digaman on Nov 11, 2008 - 66 comments

Small tweak to DNA may have given us our unique hands

Fingering What Make Us Human: Did a gene enhancer humanise our thumbs?
posted by homunculus on Sep 7, 2008 - 41 comments

Down

The Genius of Charles Darwin [more inside]
posted by chuckdarwin on Aug 8, 2008 - 66 comments

Termites are cockroaches!

Termites are Cockroaches.
posted by Citizen Premier on Jun 5, 2007 - 31 comments

The origin of life?!

The origin of life?! I heard from an authority in molecular biology today that a group of researchers funded by the Carnegie Institution and NASA believe they've discovered the origin of RNA, and with that, the origin of life. This new discovery grew out of NASA's Deep Impact mission to study the composition of comets. Specifically, they started investigating a kind of carbon that forms in layers, with each layer slighly offset from the previous one in a helix shape. Significantly, the thickness of these carbon layers corresponds with the thickness of each twist in a strand of RNA. It turns out that the individual building blocks of RNA are capable of bonding to this layered carbon when exposed to UV radiation. Once this has happened, apparently formaldehyde can then bond to the building blocks of RNA on the carbon "pattern", allowing the bonded RNA to slough off into the primordial soup. Over time, some of these RNA strands could fold and bond to themselves, forming DNA. Formaldehyde, the initial bonding material, would eventually be replaced by a more chemically sophisticated substance, creating the chemical bond that we observe today in DNA. Expect a paper on it to be released in approximately three months with all the details.
posted by insomnia_lj on Nov 6, 2005 - 66 comments

DNA analysis of a 60,000-year-old skeleton from Lake Mungo in Australia throws doubt on the "Out of Africa" theory of human evolution.

DNA analysis of a 60,000-year-old skeleton from Lake Mungo in Australia throws doubt on the "Out of Africa" theory of human evolution.
posted by lagado on Jan 11, 2001 - 7 comments

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