The Journey of Man: A Genetic Odyssey
Allen Lane, 2002 - 224 pages
Around 60,000 years ago, a man walked the soil of Africa. Every person alive today is descended from him. How did he come to be father to all of us - a real life Adam? To find out, Spencer Wells embarked on a unique voyage of discovery, travelling the world and deciphering the genetic codes of people from the Sahara Desert to Siberia. He reveals how our DNA enables us to work out where our ancestors lived, (and who they may have fought, loved and learned from); to re-trace their footsteps from Africa to the far corners of the earth ; to understand how we evolved into such a huge variety of sizes, shapes and races - and, ultimately, to create a family tree for the whole of humanity.
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Figures 1 The evolutionary ' genealogy ' of two related molecules 26 2 Proof that
modern humans originated in Africa 31 3 MtDNA genealogy , showing the split
into M and non - M lineages outside Africa 73 4 Y - chromosome genealogy ...
In contrast , the Y could typically identify subcontinental regions with a few
questions . The observation , then , was that Y - chromosome lineages were
geographically localized – they tended to define people as coming from a
particular place .
Y - chromosome ancestor . If there are fewer men than women in a population ,
then the rate at which Y - chromosome lineages are lost will be greater . But this
can ' t be true , you might be saying – the birth ratio is 50 : 50 . Surely there are
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Review: The Journey of Man: A Genetic OdysseyUser Review - Joe - Goodreads
Conclusion of Wells' work is that we're all descendants of a single man who lived in Africa about 20,000 years ago. And he is convincing! Very interesting book, with some genetic science thrown in to spice it up (but it doesn't get in the way). Read full review
LibraryThing ReviewUser Review - snash - LibraryThing
The book presents a picture of man's migrations between 60,000 and 10,000 years ago. It is a companion book with the TV special and provides more background into the scientific rational of the study and its conclusions. It is presented in a manner quite understandable to the lay person. Read full review