During the 2007 trip, Gillespie and his crew uncovered early 20th-century makeup and two pieces of broken glass that match a 1930s compact mirror, among other artifacts. DNA can be extracted from such remnants as long as those artifacts aren't contaminated during the collection process. Unfortunately, in 2007, they were. Armed with a new collection protocol, Gillespie and his team will return to the site to seek out new items during their May 2010 excursion. ... Because mtDNA is found in the cell's mitochondria, rather than the chromosomes of the cell's fragile nucleus, it isn't as quick to break down even when subject to difficult environmental conditions.
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posted by Halloween Jack at 7:00 AM on September 22 [1 favorite]