HOME >> BIOLOGY >> NEWS
Chimpanzee subspecies are genetically mixed and more diverse than humans, according to research in 5 November 1999 Science

. Why would one type of DNA paint a picture of strict barriers erected between groups and another reveal a widely intermingling population? According to the scientists, the disagreement could be a matter of timing. Since changes in mitochondrial DNA only have to spread through the maternal side of the genome, it appears to "evolve" more rapidly. Like the difference between an instant Polaroid snapshot and a photograph slowly developing in a darkroom, mitochondrial and nuclear DNA may be suited to capturing evolutionary events--such as the development of discrete subspecies--on different time scales.

In the case of the chimpanzees, "it is likely that the subspecies are old enough for the mitochondrial DNA to have become different between the subspecies, but not old enough for this to have happened to the nuclear genes," said Pbo. Since biologists often single out genetically unique populations like subspecies as a focus of conservation efforts, this distinction could have real-life implications for protecting endangered chimpanzees.

Xq13.3 had yet another surprise up its sleeve when it came to the bond between the chimpanzee and the bonobo. Their evolutionary tree revealed a closer relationship between the two separate species than was inferred from other DNA sequences. In fact, some common chimpanzees were more genetically distant from each other than they were from bonobos, a startling fact given that the two are currently separated at the species level. The results indicate that the chimpanzee and the bonobo may have split off in separate evolutionary directions quite recently.

The researchers believe that this high degree of genetic intermixing among the chimpanzee groups makes it unlikely that any cultural differences between chimpanzee populations are due to genes determining behavior. "Rather, these differences are probably truly the result of cultural evolution, the transmission of learned behaviors from generation to generation," sa
'"/>

Contact: Heather Singmaster
hsingmas@aaas.org
202-326-6414
American Association for the Advancement of Science
3-Nov-1999


Page: 1 2 3 4

Related biology news :

1. Chimpanzees with little or no human contact found in remote African rainforest
2. Chimpanzee stone tool site excavated
3. Chimpanzee virus may be key to better vaccines, study shows
4. Lemur Juliet may be new subspecies; no mate for Romeo
5. First large-scale trial of genetically personalised treatment for breast cancer to start soon
6. Double mastectomies significantly lower risk of breast cancer in women who are genetically at risk
7. Ecosystem consequences of a single, genetically based plant trait
8. Could memory performance and spatial learning be genetically based?
9. Cows resistance to worms is genetically determined
10. UC Riverside to convene conference on genetically modified organisms, Oct. 14-17, 2003
11. UCR geneticist spells out consequences of genetically engineered genes escaping into wild species

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/24/2017)... Research and Markets has announced the addition ... Trends - Industry Forecast to 2025" report to their offering. ... The Global Biometric ... of around 15.1% over the next decade to reach approximately $1,580 ... market estimates and forecasts for all the given segments on global ...
(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 ...
(Date:3/16/2017)... 2017 - Against identity fraud with DERMALOG solutions "Made in Germany "  ... ... project, multi-biometric solutions provide a crucial contribution against identity fraud. (PRNewsFoto/Dermalog Identification Systems) ... Used combined in one project, multi-biometric solutions provide a crucial contribution against ... ...
Breaking Biology News(10 mins):
(Date:5/23/2017)... ... May 23, 2017 , ... ... its 20th anniversary, marking the occasion with a strong presence at Bio-IT World ... Reception and further extends an invitation to all attendees to view posters ...
(Date:5/23/2017)... (PRWEB) , ... May 23, 2017 , ... Vortex ... of “Label-free isolation of prostate circulating tumor cells using Vortex microfluidic technology ” ... result of a collaboration with Dr. Dino Di Carlo and Dr. Matthew Rettig at ...
(Date:5/23/2017)... ... 2017 , ... Bacterial biofilms, surface adherent communities of bacteria that are encased ... food poisoning and catheter infections to gum disease and the rejection of medical implants. ... dollars per year, there is currently a paucity of means for preventing their formation ...
(Date:5/22/2017)... ... May 22, 2017 , ... Stratevi, a boutique firm that partners with healthcare ... has opened an office in downtown Boston at 745 Atlantic Ave. , “We ... to generate evidence on the value they provide, not just to patients, but also ...
Breaking Biology Technology:
Cached News: