Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Humans and chimpanzees, how similar are we?

20.11.2006
The DNA sequences of humans and chimpanzees are 98.5 percent identical, but now Uppsala University researchers can show that parts of the genetic material are missing in one species or the other.

This means in some cases that humans can produce a protein that the chimpanzee lacks and vice versa. The study, being published in the November issue of the Journal of Molecular Evolution, estimates that the total variation between humans and chimpanzees is rather 6–7 percent.

The chimpanzee, together with the pygmy chimpanzee (the bonobo), is the closest relative to humans still in existence. Even though the similarities between chimpanzees and human are obvious, there are clear differences in body structure, intellect, and behavior, etc. In the more than five million years that have passed since the developmental lines of humans and chimpanzees parted, mutations have altered the genes. A key issue for researchers studying the evolutionary history of humans and chimpanzees is to understand which of these differences have been crucial to the development of the species and their unique characteristics.

Tomas Bergström and his research team at the Department of Genetics and Pathology have compared the DNA sequence from chromosome 21 in humans and chimpanzees to map where the genetic differences are found and what significance this might have. The findings corroborate other studies that indicate that in 1.5 percent of the genetic material a nucleotide (genetic letter) has been replaced by another nucleotide. But the findings also show that more than 5 percent of the genetic material occurs in only one of the species. In both species, DNA has been added or lost. In other words, the total difference is estimated at 6.5 percent. Even though most of the differences occur, as expected, in parts of the genetic material that do not contain genes, the research team has found that pieces of DNA have been added or lost in 13 percent of the genes. Some genes (5 percent) have undergone such major changes that certain proteins can probably not be produced by one of the species.

... more about:
»Chimpanzee »DNA »Genetic »difference

“It is probable that a species can compensate for this by producing a similar protein from another part of the gene, but some of these differences have clearly been crucial to the development of the species,” says Tomas Bergström.

Anneli Waara | alfa
Further information:
http://www.uu.se
http://www.springerlink.com/content/f7783l76602ggm06/?p=bcc261c2ad1e467082ba1dad8854bcfa&pi=9

Further reports about: Chimpanzee DNA Genetic difference

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Making lightweight construction suitable for series production

More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.

Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...

Im Focus: Wonder material? Novel nanotube structure strengthens thin films for flexible electronics

Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.

"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...

Im Focus: Deep inside Galaxy M87

The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.

Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...

Im Focus: A Quantum Low Pass for Photons

Physicists in Garching observe novel quantum effect that limits the number of emitted photons.

The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...

Im Focus: Microprocessors based on a layer of just three atoms

Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.

Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Expert meeting “Health Business Connect” will connect international medical technology companies

20.04.2017 | Event News

Wenn der Computer das Gehirn austrickst

18.04.2017 | Event News

7th International Conference on Crystalline Silicon Photovoltaics in Freiburg on April 3-5, 2017

03.04.2017 | Event News

 
Latest News

DGIST develops 20 times faster biosensor

24.04.2017 | Physics and Astronomy

Nanoimprinted hyperlens array: Paving the way for practical super-resolution imaging

24.04.2017 | Materials Sciences

Atomic-level motion may drive bacteria's ability to evade immune system defenses

24.04.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>