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40% de los ashkenazim descienden de 4 mujeres (en ingles)

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345 15/5/2013 3:44 PM
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1. 40% de los ashkenazim descienden de 4 mujeres (en ingles) aizik 16/1/2006 0:38 PM
Some 3.5 million of today's Ashkenazi Jews about 40 percent of the total Ashkenazi population are descended from just four women, a genetic study indicates.
Those women apparently lived somewhere in Europe within the last 2,000 years, but not necessarily in the same place or even the same century, said lead author Dr. Doron Behar of the Rambam Medical Center in Haifa, Israel.
He did the work with Karl Skorecki of the Technion-Israel Institute of Technology and others.
Each woman left a genetic signature that shows up in their descendants today, he and colleagues say in a report published online by the American Journal of Human Genetics. Together, their four signatures appear in about 40 percent of Ashkenazi Jews, while being virtually absent in non-Jews and found only rarely in Jews of non-Ashkenazi origin, the researchers said.
They said the total Ashkenazi population is estimated at around 8 million people. The estimated world Jewish population is about 13 million.
Ashkenazi Jews are a group with mainly central and eastern European ancestry. Ultimately, though, they can be traced back to Jews who migrated from Israel to Italy in the first and second centuries, Behar said. Eventually this group moved to Eastern Europe in the 12th and 13th centuries and expanded greatly, reaching about 10 million just before World War II, he said.
The study involved mitochondrial DNA, called mtDNA, which is passed only through the mother. A woman can pass her mtDNA to grandchildren only by having daughters. So mtDNA is "the perfect tool to trace maternal lineages," Behar said Thursday in a telephone interview.
His study involved analyzing mtDNA from more than 11,000 samples representing 67 populations.
Mike Hammer, who does similar research at the University of Arizona, said he found the work tracing back to just four ancestors "quite plausible... I think they've done a really good job of tackling this question."
But he said it's not clear the women lived in Europe.
"They may have existed in the Near East," Hammer said. "We don't know exactly where the four women were, but their descendants left a legacy in the population today, whereas ... other women's descendants did not."
Behar said the four women he referred to did inherit their genetic signatures from female ancestors who lived in the Near East. But he said he preferred to focus on these later European descendants because they were at the root of the Ashkenazi population explosion.

By MALCOLM RITTER, AP Science Writer Thu Jan 12, 8:30 PM ET
2. Re: 40% de los ashkenazim descienden de 4 mujeres (en ingles) aizik 16/1/2006 5:46 PM
Me parecio interesante/curiosa esta nota. Que el 40% de los ashkenazim sean parientes entre cuatro madres... puedo pensar algunos teorias para explicarlo... pero es demasiado sorprendente
3. Re: 40% de los ashkenazim descienden de 4 mujeres (en ingles) yosef_simonson 17/2/2006 0:54 PM
Shalom, es muy interesante este articulo y me gustaria saber ms acerca de esto, ya que nuesros ancestros arribaron a Puerto Corinto, Nicaragua procedentes del extranjero, se supone que de europa pero no sabemos con exactitud de que region o pas y nuestro apellido esta dentro de la lista de apellidos judos ashkenazim, alguien tiene por casualidad alguna informacion relacionada con el tema, se lo agradecere me lo haga saber.

4. Re: 40% de los ashkenazim descienden de 4 mujeres (en ingles) jacokriete 23/5/2006 6:13 PM
Bueno talvez lo que vaya a escribir te sirva de ayuda.
La familia de mi mam estaba establecida en Nicaragua hasta 1979 ( con la revolucion y la ida de Somoza, los judos se fueron). Una prima de mi mam que vive ahora en Costa Rica como nosotros es de apellido Simonson Frech, eran de Bolonia, Managua. Creo que hablamos de la misma familia, si quieres mas informacion, este es mi correo: krirubin89@hotmail.com
5. Re: 40% de los ashkenazim descienden de 4 mujeres (en ingles) yosef_simonson 25/5/2006 5:23 PM
Muchas gracias, lo estaba esperando. te escribire para que investiguemos al respesto y me des ms info. tengo entendido por mi pap que algunos de nuestros ancestros o familiares migraron para Costa Rica.

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