31 Days of Notable Women- Rosalind Franklin & the Discovery of DNA

Rosalind Elsie Franklin (Born: London, England, July 25, 1920- Died: London, England, April 16, 1958) – Pioneer Molecular Biologist

There is probably no other woman scientist with as much controversy surrounding her life and work as Rosalind Franklin. Franklin was responsible for much of the research and discovery work that led to the understanding of the structure of deoxyribonucleic acid, DNA. The story of DNA is a tale of competition and intrigue, told one way in James Watson’s book The Double Helix, and quite another in Anne Sayre’s study, Rosalind Franklin and DNA. James Watson, Francis Crick, and Maurice Wilkins received a Nobel Prize for the double-helix model of DNA in 1962, four years after Franklin’s death at age 37 from ovarian cancer.
Source: http://www.sdsc.edu/ScienceWomen/franklin.html

Fun Friday Trivia- Egyptian jackal is actually ancient wolf

Egyptian jackal is actually ancient wolf

The Egyptian jackal, which may have been the inspiration for the Egyptian god Anubis, is actually not a jackal at all but a member of the wolf family. New genetic research in the open-access journal PLoS ONE finds that the Egyptian jackal is Africa’s only member of the gray wolf family. The new wolf, dubbed by researchers as the African wolf, is most closely related to the Himalayan wolf.

“We could hardly believe our own eyes when we found wolf DNA that did not match anything in GenBank,” lead author, Dr Eli Rueness, said in a press release. GenBank is an open-access nucleotide database.

The genetic data also points to an early origin for the Egyptian jackal/African wolf. In fact, researchers believe the animal is older than well-known wolves of the northern hemisphere. According to the study, Indian, Himalayan, and the new African wolf, broke off from the gray wolf before it moved north, colonizing Europe, northern Asia, and the Americas, further subdividing into different subspecies. Ethiopian wolves, which are a unique species of canids, are older still.

The study does not appear to make a recommendation whether or not this new wolf should be considered a unique species in its own right or another subspecies of the grey wolf (Canis lupus). Currently, gray wolf subspecies number in the thirties, and distinction between species and subspecies continues to be debated for a number of them.

Article continues: http://news.mongabay.com/2011/0126-hance_africanwolf.html

From: Jeremy Hance, MONGABAY.COM
Published January 27, 2011 08:58 AM