Welcome to the GoFuckYourself.com - Adult Webmaster Forum forums.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact us.

Post New Thread Reply

Register GFY Rules Calendar
Go Back   GoFuckYourself.com - Adult Webmaster Forum > >
Discuss what's fucking going on, and which programs are best and worst. One-time "program" announcements from "established" webmasters are allowed.

 
Thread Tools
Old 05-21-2006, 04:49 PM   #1
Libertine
sex dwarf
 
Libertine's Avatar
 
Join Date: May 2002
Posts: 17,860
Humans and chimps have possibly interbred

A few million years ago, that is.
Quote:
Close cousins

May 18th 2006
From The Economist print edition
Humans could have interbred with chimpanzees

IN A short story by Ian McEwan, ?Reflections of a Kept Ape?, a woman takes a pet chimpanzee as her lover. Although truth is often stranger than fiction, a study published this week by scientists in America demonstrates that both can be pretty odd. The research concludes that humans and chimpanzees interbred after the two species first separated, before eventually going their different ways some 5.4m years ago. Humans are thus much more recently related to their closest relatives than was previously thought.

The researchers, led by David Reich of the Broad Institute of Harvard and the Massachusetts Institute of Technology, examined the genetic record of humans and chimpanzees. The sequencing of the human genome was completed in 2001 whereas that of the chimpanzee genome was finished last autumn. The two genomes are alike, differing by only 1.2% over the course of some 3 billion pairs of the genetic ?letters? in which the language of genes is written. In fact, almost a third of the shared genes (each of which is several thousand letters long) are identical in the two species.

Instead of looking at average genetic differences, though, Dr Reich and his colleagues used the complete sequences to reveal the evolutionary history of the genomes. Scientists have long suspected that some regions of the human (and chimpanzee) genome must be older than others?that some sections trace their origins far back to the common ancestral population that gave rise to humans and chimps.

Dr Reich and his colleagues examined these common sequences, mindful of the assumption that genes steadily collect mutations as time goes by. They aligned sections of the human and chimpanzee genomes and identified how much they diverged. At different genes, humans share a common genetic ancestor with chimpanzees at different times. By studying more than 31,000 bits of the genome and measuring how closely humans are related to chimpanzees in different places, the scientists were able to study how quickly the species became different from each other. The results were published online this week in Nature.

The team found that it took at least hundreds of thousands of years and, perhaps, 4m years for human and chimpanzee ancestors to stop interbreeding after they began to be differentiated. Humans and chimpanzees were interbreeding for all this time, before finally separating no more than 6.3m years ago and probably less than 5.4m years ago. This is more recent than was thought. Moreover, the argument that the two species were interbreeding over such a long time is, to say the least, controversial.

Most interesting was what the scientists discovered about the X chromosome in humans and chimpanzees. The X is one of two chromosomes that determine a person's (or a chimp's) sex. Females carry two copies of the X chromosome while males carry one X and one Y chromosome. The progeny of interbreeding start with a big evolutionary disadvantage. It is thought that if human and chimp ancestors initially became separate species and then started to interbreed, then the hybrid males produced tended to be infertile. (No one knows exactly why males are more affected than females, just that they are in groups ranging from mammals to insects.) A viable hybrid population could only be created if the fertile females mated back to one of the ancestral populations.

The scientists found that human and chimpanzee X chromosomes are relatively similar. Indeed, their differences are roughly some 1.2m years younger than the average of all the non-sex chromosomes. This lends weight to the theory that a viable hybrid population was sustained by interbreeding over a long time.

Further evidence could come from the fossil record. Fossil finds are notoriously difficult to classify?people disagree on which physiological features are important; and each new find represents a class of one. The Toumai skull, found in Chad in 2001 and thought to be the earliest hominid, is between 6m and 7.4m years old. However, Dr Reich points out, if humans and chimpanzees had undergone an initial separation at this time, it could account for why the skull has human-like features, including a relatively flat face without a protruding snout. The interbreeding came after this time.

The researchers, along with other scientists across the world, are now working to sequence the complete genome of other close relatives to humans, including gorillas and orangutans. Primate evolution could yet reveal plenty more oddities.
http://www.economist.com/science/dis...ory_id=6941737
__________________
/(bb|[^b]{2})/
Libertine is offline   Share thread on Digg Share thread on Twitter Share thread on Reddit Share thread on Facebook Reply With Quote
Old 05-21-2006, 04:50 PM   #2
The Duck
Adult Content Provider
 
The Duck's Avatar
 
Industry Role:
Join Date: May 2005
Location: Europe
Posts: 18,243
Fuck yeah, that is awesome.
__________________
Skype Horusmaia
ICQ 41555245
Email [email protected]
The Duck is offline   Share thread on Digg Share thread on Twitter Share thread on Reddit Share thread on Facebook Reply With Quote
Old 05-21-2006, 05:07 PM   #3
MaddCaz
Confirmed User
 
Join Date: Mar 2006
Location: Illinois
Posts: 9,483
Booooyaawww
MaddCaz is offline   Share thread on Digg Share thread on Twitter Share thread on Reddit Share thread on Facebook Reply With Quote
Old 05-21-2006, 05:10 PM   #4
polish_aristocrat
Too lazy to set a custom title
 
Join Date: Jul 2002
Posts: 40,377
read it too, interesting
__________________
I don't use ICQ anymore.
polish_aristocrat is offline   Share thread on Digg Share thread on Twitter Share thread on Reddit Share thread on Facebook Reply With Quote
Old 05-21-2006, 05:13 PM   #5
u-Bob
there's no $$$ in porn
 
u-Bob's Avatar
 
Industry Role:
Join Date: Jul 2005
Location: icq: 195./568.-230 (btw: not getting offline msgs)
Posts: 33,063
Interesting read...
u-Bob is offline   Share thread on Digg Share thread on Twitter Share thread on Reddit Share thread on Facebook Reply With Quote
Old 05-21-2006, 05:13 PM   #6
Neo_Maven
New owner of GFY
 
Join Date: May 2006
Posts: 42
This is newz?

Just look at jimthefiend, he's been fucking his "chimp" wife for a while now. It ain't news here pal.
Neo_Maven is offline   Share thread on Digg Share thread on Twitter Share thread on Reddit Share thread on Facebook Reply With Quote
Old 05-21-2006, 05:15 PM   #7
baddog
So Fucking Banned
 
Industry Role:
Join Date: Apr 2001
Location: the beach, SoCal
Posts: 107,089
Interesting, just saw this too.
baddog is offline   Share thread on Digg Share thread on Twitter Share thread on Reddit Share thread on Facebook Reply With Quote
Old 05-21-2006, 05:20 PM   #8
Drake
Hello world!
 
Industry Role:
Join Date: Mar 2003
Posts: 12,508
Bestiality, don't knock it 'til you try it
Drake is offline   Share thread on Digg Share thread on Twitter Share thread on Reddit Share thread on Facebook Reply With Quote
Old 05-21-2006, 05:21 PM   #9
The Sultan Of Smut
Confirmed User
 
The Sultan Of Smut's Avatar
 
Join Date: Dec 2004
Location: Vancouver
Posts: 4,325
I thought the Bush/chimpanzee pics would be posted by now.
The Sultan Of Smut is offline   Share thread on Digg Share thread on Twitter Share thread on Reddit Share thread on Facebook Reply With Quote
Post New Thread Reply
Go Back   GoFuckYourself.com - Adult Webmaster Forum > >

Bookmarks



Advertising inquiries - marketing at gfy dot com

Contact Admin - Advertise - GFY Rules - Top

©2000-, AI Media Network Inc



Powered by vBulletin
Copyright © 2000- Jelsoft Enterprises Limited.