Who Do You Think You Are?

Y-DNA and mtDNA

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Your cells have other DNA that can be tested

Two other types of DNA do not recombine, so are passed down the generation­s in a near-unaltered state. Y-chromosome DNA (Y-DNA) is only carried by men, and is passed from a father to his sons. As such it tracks male descent only. However, mitochondr­ial DNA (mtDNA) is found within every nucleic cell in our body, since it provides the energy to make it function, and is passed from a mother to her children, both male and female. Because these types of DNA are never broken, they can be used to track the migration and origin of specific lineages, although Y-DNA represents only a very small portion of a man’s total genome so cannot be used to infer large population movements. Admixture using autosomal DNA is much more representa­tive for this purpose.

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