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Most helpful customer reviews
1 of 1 people found the following review helpful
5.0 out of 5 stars
Another great film from National Geographic,
By Avid Reader "Cat" (Canada) - See all my reviews
This review is from: National Geographic: The Human Family Tree (DVD)
All four generations of our family enjoyed watching this DVD and some of us have gone on to the DNA testing ourselves. The children ages 14 and 10 were as fascinated as the adults. I highly recommend the purchase of The Human Family Tree.
5.0 out of 5 stars
Family Tree's and DNA, We are all related and here is living proof`,
By
This review is from: National Geographic: The Human Family Tree (DVD)
For anyone who wants to know where we come from, who are ancestors and how are we related, this is the perfect DVD. If you are interested in Genealogy and or DNA there isn't a better DVD on the market. If you haven't had your DNA tested, this film might make you do it. It is a really fascinating subject that explains so much.
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Most Helpful Customer Reviews on Amazon.com (beta) Amazon.com:
4.3 out of 5 stars (15 customer reviews) 117 of 125 people found the following review helpful
5.0 out of 5 stars
Excellent presentation of our common genetic links,
By Dr. Wm Hampton Adams - Published on Amazon.com
Amazon Verified Purchase(What's this?)
This review is from: National Geographic: The Human Family Tree (DVD)
The National Geographic Society research on the Genographic Project is a genetic analysis of the human species origin in Africa and its spread throughout the world. Using samples, the lab results tell a story of the many branchings of the human tree. From the mitochondrial DNA, the researchers found that everyone in the world descends from one women in Africa some 150,000 to 200,000 years ago, while using the Y-chromosome they found we all descend from one man some 70,000 years ago. Mutations created branches through time in both areas and these are used to show the basic migration routes for the people, through their genes.That these branches happened appears to be well researched. However, the researchers give approximate dates for these events and that is an area open to question. Is it really 150,000 or is it 1.5 million years ago for the scientific "Eve"? One issue glossed over is that the genetic evidence is not matching well with the archaeological and human paleontological data. For example, the genetic data showed a date of 15-20,000 years ago for the peopling of the New World and assumes that Clovis people were the first. How then are the dozens of well-dated sites in South America from 30,000+ years going to fit the genetic model. One statement was potentially wrong, when they said that Native Americans were isolated until Columbus. This negates the Viking settlement in Labrador, Canada, as well as possible contact with Chinese. The Eskimo and Aleut who came later to America are also not included. Another issue that needs to be discussed better in this film is that Europe and Asia were well occupied about a million years ago, and that genetic links between Homo erectus fossils in China and modern Asians exist in their shovel-shaped incisors. Similarly, some of the Java Homo erectus specimens show traits still found there. Clearly, those populations today have some ancestors who did not migrate out of Africa some 70,000 years ago. Researchers also are still debating if Neanderthals left their genes in us. Going back to 150,000 years ago and assuming 25 years per generation, each of us had 2 to the 6000th power ancestral lines in our massive genealogy. (Two to the 30th power is a billion!) This film portrays only two of those lines. The film is well worth seeing. However, in many ways it contains the fallacy of extrapolation because it looks only at those two lines. Nevertheless, an important point made repeatedly in the film is that we are all cousins in the human family and that research on the great chain of being is worthwhile. I ordered my kit today from National Geographic. 19 of 19 people found the following review helpful
5.0 out of 5 stars
Human Family Tree,
By P. Gipson "Pam" - Published on Amazon.com
Amazon Verified Purchase(What's this?)
This review is from: National Geographic: The Human Family Tree (DVD)
This long term study of human geneology is very informative, lots of new informatoin regarding human origins and dispersement over time. Follows a number of different study participants, giving their background and opinions on where they think they originated and in the end what their DNA shows their origins to be. Nice graphics to show different migration paths. Explains how all humans can trace back to the same ancestry over hundreds of generations.
19 of 21 people found the following review helpful
5.0 out of 5 stars
we are all one,
By Holly H. Short - Published on Amazon.com
Amazon Verified Purchase(What's this?)
This review is from: National Geographic: The Human Family Tree (DVD)
The first time I saw this DVD my mind was blown away. Imagine tracing all of us back to one tribe in Africa. The history, migration, reasons for diversity-it is one of the best shows ever. It will certainly change the way you view the world.
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