Modern Day Human Population Migration Essay

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The Indian subcontinent has served as a major corridor for the genetic diversity of its inhabitants. Modern-day human population dispersal routes is punctuated with delineating migrations that eventually led anatomically modern humans (AMH) to spread over most parts of the world within the past 100,000 years (Cavalli- Sforza, Menozzi and Piazza 1994; Lahr and Foley 1994). Migration waves are influenced by landscape traversed and thus, natural inter continental passageways acting as corridors played a key-role in the evolutionary history of human population migration events. Mitochondrial DNA polymorphism (mtDNA, Y chromosome markers (Cordaux et al., 2004), microsatellites (Belle and Barbujani 2007) and autosomal genes (Wang et al.,1998) are powerful genetic markers for inferring the genealogy and population migrations that have been used repeatedly in reconstruction of human evolutionary history. Apart from that, alternative approaches focused on the demographic polymorphisms present in the persistent viruses like the human polyomavirus JC virus; a DNA virus that infect renal tissue (Agostini et al 1997) , type 16 (HPV-16) and type 18 (HPV-18) (human papillomavirus) (Chan et al . 1992),RNA viruses, such as HTLV-I (the human T-cell lymphotropic virus types I and II) a member of the Retroviridae family (Slattery et al . 1999), HIV (Cornelissen et al . 2000), fungi (Fisher et al., 2001), rats (Matisoo-Smith, E., et al., 1998), and the eubacterial candidate Helicobacter pylori…

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