Y-Chromosome Studies

  • Single nucleotide polymorphism is a common, but minute, variation that occurs in human DNA at a frequency of one every 1,000 bases, often used to track inheritance.SNP in DYS199 The place on a chromosome where a specific gene is located, a kind of address for the gene.locus present in all 5 Native American populations and in Siberian Chukchi populations

  • Examination of more than 2,500 Y-chromosomes of wide geographic origin indicated this A common variation in the sequence of DNA among individuals of a species or race.polymorphism is found only in Native American and Asian populations (not found in African, Australoid, or Caucasian European populations)

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Slide 33 of 56


The Y-chromosome is found only in males (the normal male has one X- and one Y-chromosome). Therefore Y-chromosomes are transferred from father to son, without recombination. Any A permanent structural alteration in DNA, consisting of either a substitution, insertion or deletion of nucleotide bases.mutation introduced into the Y-chromosome will be transferred to descendant males.

The single One of the structural components, or building blocks, of DNA and RNA. A nucleotide consists of a base plus a molecule of sugar and one of phosphate.nucleotide A common variation in the sequence of DNA among individuals of a species or race.polymorphism ( Single nucleotide polymorphism is a common, but minute, variation that occurs in human DNA at a frequency of one every 1,000 bases, often used to track inheritance.SNP) DYS199 in the Y-chromosome is found in all 5 Native American populations and Asian populations (native Siberian populations, Siberian Eskimos, and Asian Chukchi), but not in African, Australoid, or Caucasian populations.1 These studies show that all Native American populations are related to Asian populations.


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  1. Lell JT, Brown MD, Schurr TG, Sukernik RI, Starikovskaya YB, Torroni A, Moore LG, Troup GM, Wallace DC. 1997. One of the two sex chromosomes that determines maleness in mammals, carried and passed down from males to males.Y chromosome A common variation in the sequence of DNA among individuals of a species or race.polymorphisms in Native American and Siberian populations: identification of Native American One of the two sex chromosomes that determines maleness in mammals, carried and passed down from males to males.Y chromosome haplotypes. Hum Genet 100:536-543 100:536-543.

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