Mitochondrial dna dating

When someone mentions human DNA, what do you think of?If you know a little about the topic, perhaps you think of the 46 chromosomes that inhabit the nucleus of almost every cell that comprises your body.This is because the 23 pairs of chromosomes that we inherit from our parents go through a process of recombination shortly after we’re conceived.

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test and they each report on different aspects of your genetic heritage.

Broadly speaking, they can be categorised into autosomal, maternal and paternal ancestry tests, and it’s the maternal tests that are conducted using mitochondrial (aka mt DNA).

DNA controls the production, timing, and quantity of proteins produced by each cell.

When the cell begins to utilize the DNA codes to create proteins, enzymes called RNA polymerases unzip the strand and aid in the pairing of new bases onto the template strand.

In 1987, three scientists announced in the journal Nature that they had found a common ancestor to us all, a woman who lived in Africa 200,000 years ago.

She was given the name "Eve," which was great for capturing attention, though somewhat misleading, as the name at once brought to mind the biblical Eve, and with it the mistaken notion that the ancestor was the first of our species—the woman from whom all humankind descended.Mitochondrial ) this has led scientists to theorise that billions of years ago, these structures may once have been separate organisms.As life evolved on our planet, it’s thought that mitochondria may have become incorporated into our cells, and that despite no longer being able to sustain themselves without us, they continue to maintain their from generation to generation.When DNA replicates, the chemical bonds that link the two sides break and new nucleotides join to the unwound strand, generating strands with the same sequences as the original.Mutations arise when an error in the copying occurs the wrong base joins to the strand.Though these options may seem a little confusing at first, once you understand a bit more about each type, you’ll be in a better position to pick the test (or combination of tests) that’ll help you research the aspects of your ancestry that you’re interested in.

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