Författare Ämne: Mänskans ursprung - starta om?  (läst 3642 gånger)

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Mänskans ursprung - starta om?
« skrivet: mars 26, 2010, 09:20 »
Nu påstås att vi har större gemensamhet med orangutangerna än med chimpanserna;

Citera

John Grehan, of the Buffalo Museum of Science in New York State, and Jeffrey Schwartz, of the University of Pittsburgh in Pennsylvania, say that the DNA evidence cited by many scientists only looks at a small percentage of the human and chimp genomes.

What's more, the genetic similarities likely include many ancient DNA traits that are shared across a much broader group of animals.

Humans share at least 28 unique physical characteristics with orangutans but only 2 with chimps and 7 with gorillas, the authors say.

The finding, which has the potential to spark a radical rethink of human origins, is being met with caution.

"There are many paleontologists and molecular biologists who are heaping scorn on this paper," noted Peter Andrews of the Natural History Museum in London.

http://news.nationalgeographic.com/news/2009/06/090623-humans-chimps-related.html
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“It's easier to fool people than to convince them that they have been fooled.”

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« Svar #2 skrivet: januari 24, 2011, 10:19 »
Skillnaden mellan schimpansen och människan är betydligt större än man trott.

http://www.nature.com/nature/journal/v463/n7280/full/nature08700.html

Nu är är det orangutangerna som gäller:
http://www.youtube.com/watch?v=sSXsu1CheWo
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Utloggad Ragnfast

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« Svar #3 skrivet: januari 24, 2011, 10:49 »
Vad kan det ha för relevans för "Out of Africa"? (Jag har för övrigt alltid undrat hur en så högt utvecklad primat hamnat så långt bort som Sumatra och Borneo.)

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« Svar #4 skrivet: januari 24, 2011, 11:29 »
Om x+y=z så blir väl z-y=x.

Vi har ju facit kvar, eftersom z (homo sapiens sapiens) fortfarande existerar. Nu är frågan bara, igen, vilken primat som är x och vart denna omvandling (y) försiggått...  >:D
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« Svar #5 skrivet: januari 28, 2011, 09:53 »
Orangutan Genome Sequenced

"...the previous study write that there are many similarities to the human and orangutan genome, much more similar than human to chimp, in fact. They suspect that could be because humans split from a common ancestor with chimps, of which both species had the same ancestral orangutan DNA. What remains curious is that humans and chimpanzees have evolved separately for millions of years. In the process, chimps for mysterious reasons lost some orangutan DNA that humans retained."

http://primatology.net/2011/01/26/orangutan-genome-sequenced/

Incomplete lineage sorting patterns among human, chimpanzee and orangutan

We search the complete orangutan genome for regions where humans are more closely related to orangutans than to chimpanzees due to incomplete lineage sorting (ILS) in the ancestor of human and chimpanzees.

http://genome.cshlp.org/content/early/2011/01/26/gr.114751.110

Orang-utans join the genome gang

Orang-utans can now be added to the list of species that have had their genomes sequenced, offering conservationists a wealth of data in their efforts to save the endangered great ape. A group of researchers in the United States and Europe has published a draft of the genome of a captive orang-utan called Susie, and less complete copies from ten wild individuals.

http://www.nature.com/news/2011/110126/full/news.2011.50.html

Comparative and demographic analysis of orang-utan genomes
http://www.nature.com/nature/journal/v469/n7331/full/nature09687.html
“It's easier to fool people than to convince them that they have been fooled.”