DNA tests on some members of the De Beer family tree will be conducted at the beginning of 2012 by a researcher of the University of Pretoria in Gauteng, South Africa.  Although this is a very exiting field in family research, scientists agree that only 3% of the gene history can be studied while the actual function of  the rest of the 97% will still remain a mystery in biotechnology, says the renowned author, Graham Hancock, in his book: Supernatural, Meetings with the Ancient Teachers of Mankind, page 553.(Arrow Books. 2005. www.rbooks.co.uk  British Library. ISBN 9780099474159.)