This is the blog for GW students taking Human Evolutionary Genetics. This site is for posting interesting tidbits on: the patterns and processes of human genetic variation;human origins and migration; molecular adaptations to environment, lifestyle and disease; ancient and forensic DNA analyses; and genealogical reconstructions.

GWHEG figure

GWHEG figure

Friday, April 27, 2018

Non Potluck: Anthropogenic pressures and the loss of species genetic diversity


Humans have been known to drastically alter the environment that they are in and this usually has a negative impact for native species living in the area. A recent study sought to examine changes in genetic diversity within two species of gorillas, whose habitats have been altered due to human activity. Using both museum and modern fecal samples, they looked at over 100 complete mitochondrial genomes. The results showed that there was a significant decline in haplotype and nucleotide diversity when comparing modern samples to the historic ones. Furthermore, this decline in diversity has been attributed to the loss of the peripheral populations (ones most impact by anthropogenic pressures) rather than the core range of the species. This study shows the importance of species conservation and preservation as it has been studied that genetic diversity is important for a species long-term survival and with the genetic diversity of gorilla’s declining, it makes it all the more vital for increase conservation efforts.


The article can be found in Nature here

Sam

(Nature review 3/3)


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