dynamics of founder effect :: essays papers

dynamics of founder effect Populations are divided by geographic boundaries, confining a specific region/group of people to share and distribute its genetic traits within themselves without outward influence. The size of these populations is dependant upon whether certain mountains, rivers, deserts, oceans, or other extreme geographical, cultural, or technological conditions determine the tendency for isolation or migration. Most modern populations were originally settled by a relatively small handful of people that for whatever reason migrated to a new uninhabited area, and then multiplied. The genetic code of those founding individuals largely determines the genetic code of future generations, making that area distinctive having it’s future generations genetic code modeled after the original founders. Analyzing the founders of populations requires written or physical evidence to identify any possible founder of a population. So to analyze modern founding fathers is relatively easier in comparison to older founding fathers because of a lack of physical evidence for older populations. For a recently founded population such as the French settlers that migrated to the Chicoutimi region of Quebec, Canada in the 1940’s there is a collection of written knowledge about it’s inhabitants over that time. That information can identify the specifics person/persons that might have founded that population. Other populations that we have a large collection of knowledge regarding its founders include white Australians, African-Americans, as well as certain Caribbean populations. In contrast, trying to determine the founding fathers whom settled North America from Asia about fifteen thousand years ago is much more difficult because there is so little recorded evidence and knowledge o f that time period. This makes it difficult to determine the founders of the large populations we know today. Equatorial Africa was occupied by mostly Bushmen and Pygmies until about two thousand years ago, when the Bantu speaking people of the Congo region developed agriculture, iron, and domesticated animals. Following those advances the small number of Bantu multiplied until they overran half the African continent, pushing the Pygmies and Bushmen into areas unsuitable for farmland. The Bantu peoples thereby founded the entire gene pool of subequatorial Africa anew a mere 2,000 years ago. Europe’s founding fathers came largely within two migrations: one being farmers form the Near East about eight thousand years ago settling largely along the Mediterranean; the second being from Southern Russia about six thousand years ago populating northern and western Europe. The genetic traits of the founders of a population can be positive, negative, or neutral.