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Life sciences/Genetics/Molecular genetics/Genetic material/DNA/Mitochondrial DNA

Scientists have recovered the first ancient human DNA from cave sediments lacking human skeletal remains.
The 12,000-year-old skeleton contains the genetic signature of modern Native Americans, suggesting that the earliest Americans and Native Americans share a single ancestral population.

The complex connections between genes, environment, and society will be the focus of the AAAS Caribbean Division’s annual conference, which convenes on 1 October on the University of Puerto Rico’s Mayagüez campus.

The 2011 conference is dedicated to Juan Carlos Martínez Cruzado, a researcher in the biology department at UPR-Mayagüez and a pioneer in mitochondrial DNA studies that link Puerto Rico’s original indigenous population to its current population. Cruzado will deliver the conference’s plenary lecture on indigenous genetic heredity in Puerto Rico.