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Location: UFOUpDatesList.Com > 2012 > Apr > Apr 13

Could 'Advanced' Dinosaurs Rule Other Planets?

From: Ray Dickenson <r.dickenson.nul>
Date: Thu, 12 Apr 2012 17:28:04 +0100
Archived: Fri, 13 Apr 2012 07:22:03 -0400
Subject: Could 'Advanced' Dinosaurs Rule Other Planets?

Source: ScienceDaily.Com


Apr. 11, 2012

Could 'Advanced' Dinosaurs Rule Other Planets?

New scientific research raises the possibility that advanced
versions of T. rex and other dinosaurs - monstrous creatures
with the intelligence and cunning of humans - may be the life
forms that evolved on other planets in the universe. "We would
be better off not meeting them", concludes the study, which
appears in the Journal of the American Chemical Society.

In the report, noted scientist Ronald Breslow, Ph.D., discusses
the century-old mystery of why the building blocks of
terrestrial amino acids (which make up proteins), sugars, and
the genetic materials DNA and RNA exist mainly in one
orientation or shape.

There are two possible orientations, left and right, which
mirror each other in the same way as hands. This is known as
"chirality." In order for life to arise, proteins, for instance,
must contain only one chiral form of amino acids, left or right.

With the exception of a few bacteria, amino acids in all life on
Earth have the left-handed orientation. Most sugars have a
right-handed orientation. How did that so-called homochirality,
the predominance of one chiral form, happen?

Breslow describes evidence supporting the idea that the unusual
amino acids carried to a lifeless Earth by meteorites about 4
billion years ago set the pattern for normal amino acids with
the L-geometry, the kind in terrestial proteins, and how those
could lead to D-sugars of the kind in DNA.

"Of course," Breslow says, "showing that it could have happened
this way is not the same as showing that it did." He adds: "An
implication from this work is that elsewhere in the universe
there could be life forms based on D-amino acids and L-sugars.
Such life forms could well be advanced versions of dinosaurs, if
mammals did not have the good fortune to have the dinosaurs
wiped out by an asteroidal collision, as on Earth. We would be
better off not meeting them."

Journal Reference:

Ronald Breslow. Evidence for the Likely Origin of Homochirality
in Amino Acids, Sugars, and Nucleosides on Prebiotic Earth.
Journal of the American Chemical Society, 2012; 120325104045005
DOI: 10.1021/ja3012897

American Chemical Society (2012, April 11). Could 'advanced'
dinosaurs rule other planets?

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