Y-Chromosome Studies
Polymorphisms of Native American populations show a gradient of
polymorphisms extending from North to South America
Such
a gradient is expected from an Asian migration through the
Bering Strait
Book
of Mormon suggests that a genetic gradient should extend
in the opposite direction
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Slide 35 of 56
Other studies have examined the pattern of migration in the Americas
revealed through Y chromosomal polymorphisms found in different Native American
populations. These studies have found a North to South gradient
of increasing genetic drift in the Americas.1
This is contrary to the Book of Mormon claim that the founding
populations originated in either Central America or Chile. If such claims
were true, the gradient would run in the opposite direction.
References 
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Bortolini MC, Salzano FM, Bau CH, Layrisse Z, Petzl-Erler ML, Tsuneto
LT, Hill K, Hurtado AM, Castro-De-Guerra D, Bedoya G, Ruiz-Linares A.
2002. Y-chromosome biallelic polymorphisms and Native American
population structure. Ann Hum Genet 66:255-259.
Merriwether DA, Rothhammer F, Ferrell RE. 1995. Distribution of the four
founding lineage haplotypes in Native Americans suggests a single wave of
migration for the New World. Am. J. Phys. Anthropol. 98:411-430.
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