Navigation Links
Identical twins not as identical as believed
Date:2/15/2008

Contrary to our previous beliefs, identical twins are not genetically identical. This surprising finding is presented by American, Swedish, and Dutch scientists in a study being published today in the prestigious journal American Journal of Human Genetics. The finding may be of great significance for research on hereditary diseases and for the development of new diagnostic methods.

How can it be that one identical twin might develop Parkinsons disease, for instance, but not the other" Until now, the reasons have been sought in environmental factors. The current study complicates the picture.

Even though the genome is virtually identical in identical twins, our results show that there in fact are tiny differences and that they are relatively common. This could have a major impact on our understanding of genetically determined disorders, says Jan Dumanksi, who co-directed the international study with his colleague Carl Bruder.

By uncovering these small genetic differences in identical twins where one of them is sick, we have a way of tying specific genetic changes to the genesis of common diseases, says Carl Bruder.

These researchers studied 19 pairs of identical twins and found that they indeed had the same DNA but nevertheless evinced differences in the number of copies of individual DNA segments. A segment might be missing, or more copies might exist in one twin. This could explain how one identical twin can be afflicted with a disorder while the other twin remains fully healthy, according to the scientists.


'/>"/>

Contact: Jan Dumanski
Jan.Dumanski@genpat.uu.se
205-996-4042
Uppsala University
Source:Eurekalert

Page: 1

Related biology news :

1. Researchers detect hint of oxygen 50 to 100 million years earlier than first believed
2. New molecular clock from LLNL and CDC indicates smallpox evolved earlier than believed
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/30/2017)... March 30, 2017 The research team of ... three-dimensional (3D) fingerprint identification by adopting ground breaking 3D fingerprint minutiae ... realm of speed and accuracy for use in identification, crime investigation, ... cost. ... A research ...
(Date:3/24/2017)... 2017 The Controller General of Immigration from Maldives ... Algeen have received the prestigious international IAIR Award for the most ... Reading ... Maldives ... Abdulla Algeen (small picture on the right) have received the IAIR award ...
(Date:3/22/2017)... YORK , March 21, 2017 ... Marketing Cloud used by retailers such as 1-800-Flowers ... its platform — Product Recommendations and Replenishment. Using Optimove,s ... give more personalized product and replenishment recommendations to ... but also on predictions of customer intent drawn ...
Breaking Biology News(10 mins):
(Date:5/24/2017)... BOUNTIFUL, Utah (PRWEB) , ... May 24, 2017 ... ... announces the selection and implementation of CLEARAS Water Recovery’s Advanced Biological Nutrient Recovery ... a key component of a $24 million plant upgrade to sustainably meet current ...
(Date:5/24/2017)... , May 23, 2017 As Ebola resurfaces ... with four deaths and 20 suspected cases now reported, a ... the PubMed database, showed a correlation between the 2014 and ... Replikin counts rose sharply in 2012-13, which preceded the 2014 ... in the Ebola gene Replikin counts in 2014-15, which again ...
(Date:5/23/2017)... ... May 23, 2017 , ... ... month its 20th anniversary, marking the occasion with a strong presence at Bio-IT ... Welcome Reception and further extends an invitation to all attendees to view ...
(Date:5/23/2017)... ... May 23, 2017 , ... Energetiq Technology, ... announced a facility expansion to accommodate its rapid growth. , The renovations at ... and renovation of the existing areas. The expansion includes, a state-of-the-art engineering facility, ...
Breaking Biology Technology: