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Mitochondrial dna dating

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Anja Taylor It's an all-too familiar story in trauma units across the world - a patient survives the initial injuries and then dies from multiple organ failure.NARRATIONWhy it can happen to severely injured patients like Ron has so far been a mystery.

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The incredible story of the peopling of the world is told through a combination of genetics and archaeology.Professor Zsolt Balogh We are faster getting the patient into hospital, or resuscitation strategy's improved.We use more blood and blood components, or surgical techniques may be faster.Their blood pressure will start to go down and their heart rate will go up.We also see it in the way their blood tests start to deteriorate.Suddenly, five days later, and with no sign of bacterial infection, the patients organs start to fail leading to the patients death.

What causes multiple organ failure has been a mystery but a ground breaking discovery at John Hunter Hospital may provide the answer, and in so doing prevent this catastrophic outcome. He was right near a Level 1 trauma centre when the car hit him.

These earliest groups of mt DNA sequences - or haplogroups - are known by scientists as 'L1' and 'L0', and all subsequent groups are also known by a letter.

About 60,000 years ago a founder group moved out of Africa and their descendants, through the natural process of mutation, formed the haplogroups M and N.

Some early modern fossil locations dating from this period are indicated on the map.

The group of mt DNA sequences from this first expansion can still be found today, particularly in the Khoi San ('bushmen') of Southern Africa and the West pygmies of Central Africa.

Roots for Real's mt DNA tracing service enables you to discover your very own haplogroup, and much more about your ancestral origins.