Genetic studies have has already disproven the Khazar hypothethis:
Autosomal DNA suggests 30–60% of Ashkenazi ancestry traces to ancient Levant populations.
On the maternal lines (mitochondrial DNA) they are predominantly European, especially Southern European (e.g., Italian), indicating intermarriage with local populations during the first millennium CE. About 40–50% of Ashkenazi DNA is European, with minor Eastern European contributions.
Ashkenazi Jews descend from a small founding population (est. 300–1,000 individuals) around 800–1000 CE, leading to a genetic bottleneck. This is evident in high frequencies of certain alleles and recessive genetic disorders (e.g., Tay-Sachs, BRCA1/2 mutations) and hardly one that would result from a mass conversion as you lot claim.
Now language, Yiddish is a High German dialect, developed in the Rhineland (modern Germany and northern France) around the 9th–10th centuries CE. Its grammar, syntax, and core vocabulary (70–80%) are Germanic, closely related to Middle High German, with influences from Hebrew (10–15%), Slavic languages (10%), and Romance languages (trace amounts). If Ashkenazi Jews descended from Khazars, Yiddish would likely show significant Turkic, Caucasian, or Iranian linguistic elements, but they don't exist.
Localizing Ashkenazic Jews to Primeval Villages in the Ancient Iranian Lands of Ashkenaz
Ranajit Das , Paul Wexler , Mehdi Pirooznia , Eran Elhaik Author Notes
Genome Biology and Evolution, Volume 8, Issue 4, April 2016
Abrstract
The Yiddish language is over 1,000 years old and incorporates German, Slavic, and Hebrew elements. The prevalent view claims Yiddish has a German origin, whereas the opposing view posits a Slavic origin with strong Iranian and weak Turkic substrata. One of the major difficulties in deciding between these hypotheses is the unknown geographical origin of Yiddish speaking Ashkenazic Jews (AJs). An analysis of 393 Ashkenazic, Iranian, and mountain Jews and over 600 non-Jewish genomes demonstrated that Greeks, Romans, Iranians, and Turks exhibit the highest genetic similarity with AJs. The Geographic Population Structure analysis localized most AJs along major primeval trade routes in northeastern Turkey adjacent to primeval villages with names that may be derived from “Ashkenaz.” Iranian and mountain Jews were localized along trade routes on the Turkey’s eastern border. Loss of maternal haplogroups was evident in non-Yiddish speaking AJs. Our results suggest that AJs originated from a Slavo-Iranian confederation, which the Jews call “Ashkenazic” (i.e., “Scythian”), though these Jews probably spoke Persian and/or Ossete. This is compatible with linguistic evidence suggesting that Yiddish is a Slavic language created by Irano-Turko-Slavic Jewish merchants along the Silk Roads as a cryptic trade language, spoken only by its originators to gain an advantage in trade. Later, in the 9th century, Yiddish underwent relexification by adopting a new vocabulary that consists of a minority of German and Hebrew and a majority of newly coined Germanoid and Hebroid elements that replaced most of the original Eastern Slavic and Sorbian vocabularies, while keeping the original grammars intact.
The study doesn’t identify specific genetic markers linking Ashkenazi Jews to Khazar populations (e.g., modern Chuvash or Crimean Tatars, used as proxies). Instead, it broadly cites Iranian and Turkic similarity, which could reflect general Silk Road admixture rather than Khazar descent.
Other genetic studies (e.g., Behar et al., 2013; Cell, 2022) confirm Ashkenazi Jews descend from a small founding population like I mentioned above.
And you still have to contend with the 30-60% of autosomal DNA to Levant populations that could not rise from a mass conversion of a Turkic people.
Yiddish lacks Turkic vocabulary, phonemes, or syntax, which would be expected if it originated among Khazar or Turkic-speaking Jews. Even minor loanwords from Turkic languages are absent, unlike Slavic terms (e.g., bubbe from Polish babcia).
The relexification theory (replacing Slavic vocabulary with German while retaining Slavic grammar) is widely rejected by linguists.
In an effort to discover the origin of the Yiddish language, researchers say that they have found evidence that proves that Ashkenazi Jews are descended predominately from four villages in northeastern Turkey.
The study, titled “Localizing Ashkenazic Jews to primeval villages in the ancient Iranian lands of Ashkenaz” was conducted by researchers from three universities in the U.K., U.S., and Israel. It was published in the journal Genome Biology and Evolution.
Using a Geographic Population Structure device, Dr Eran Elhaik, a geneticist from the University of Sheffield who led the study, was able to convert the DNA of Ashkenazi Jews into geographic coordinates.
The data showed that 90 percent of Ashkenazi Jews have links to the ancient villages of Iskenaz, Eskenaz, Ashanaz, and Ashkuz that sit near ancient Silk Road trade routes.
From the study:
“North east Turkey is the only place in the world where these place names exist – which strongly implies that Yiddish was established around the first millennium at a time when Jewish traders who were plying the Silk Road moved goods from Asia to Europe wanted to keep their monopoly on trade.
“They did this by inventing Yiddish – a secret language that very few can speak or understand other than Jews. Our findings are in agreement with an alternative theory that suggests Yiddish has Iranian, Turkish, and Slavic origins and explains why Yiddish contains 251 words for the terms ‘buy’ and ‘sell’. This is what we can expect from a language of experienced merchants.”
Yiddish, which incorporates German, Slavic and Hebrew, and is written in Aramaic letters, is commonly thought to be an old German dialect.
However, an alternative theory proposed by Professor Paul Wexler from the University of Tel Aviv and also an author on the study, suggests that Yiddish is a Slavic language that used to have both Slavic grammar and words but in time shed its Slavic lexicon and replaced it with common and unfamiliar German words.
Genetic studies have has already disproven the Khazar hypothethis:
Autosomal DNA suggests 30–60% of Ashkenazi ancestry traces to ancient Levant populations.
On the maternal lines (mitochondrial DNA) they are predominantly European, especially Southern European (e.g., Italian), indicating intermarriage with local populations during the first millennium CE. About 40–50% of Ashkenazi DNA is European, with minor Eastern European contributions.
Ashkenazi Jews descend from a small founding population (est. 300–1,000 individuals) around 800–1000 CE, leading to a genetic bottleneck. This is evident in high frequencies of certain alleles and recessive genetic disorders (e.g., Tay-Sachs, BRCA1/2 mutations) and hardly one that would result from a mass conversion as you lot claim.
Now language, Yiddish is a High German dialect, developed in the Rhineland (modern Germany and northern France) around the 9th–10th centuries CE. Its grammar, syntax, and core vocabulary (70–80%) are Germanic, closely related to Middle High German, with influences from Hebrew (10–15%), Slavic languages (10%), and Romance languages (trace amounts). If Ashkenazi Jews descended from Khazars, Yiddish would likely show significant Turkic, Caucasian, or Iranian linguistic elements, but they don't exist.
Localizing Ashkenazic Jews to Primeval Villages in the Ancient Iranian Lands of Ashkenaz
Ranajit Das , Paul Wexler , Mehdi Pirooznia , Eran Elhaik Author Notes Genome Biology and Evolution, Volume 8, Issue 4, April 2016
Abrstract
The Yiddish language is over 1,000 years old and incorporates German, Slavic, and Hebrew elements. The prevalent view claims Yiddish has a German origin, whereas the opposing view posits a Slavic origin with strong Iranian and weak Turkic substrata. One of the major difficulties in deciding between these hypotheses is the unknown geographical origin of Yiddish speaking Ashkenazic Jews (AJs). An analysis of 393 Ashkenazic, Iranian, and mountain Jews and over 600 non-Jewish genomes demonstrated that Greeks, Romans, Iranians, and Turks exhibit the highest genetic similarity with AJs. The Geographic Population Structure analysis localized most AJs along major primeval trade routes in northeastern Turkey adjacent to primeval villages with names that may be derived from “Ashkenaz.” Iranian and mountain Jews were localized along trade routes on the Turkey’s eastern border. Loss of maternal haplogroups was evident in non-Yiddish speaking AJs. Our results suggest that AJs originated from a Slavo-Iranian confederation, which the Jews call “Ashkenazic” (i.e., “Scythian”), though these Jews probably spoke Persian and/or Ossete. This is compatible with linguistic evidence suggesting that Yiddish is a Slavic language created by Irano-Turko-Slavic Jewish merchants along the Silk Roads as a cryptic trade language, spoken only by its originators to gain an advantage in trade. Later, in the 9th century, Yiddish underwent relexification by adopting a new vocabulary that consists of a minority of German and Hebrew and a majority of newly coined Germanoid and Hebroid elements that replaced most of the original Eastern Slavic and Sorbian vocabularies, while keeping the original grammars intact.
The study doesn’t identify specific genetic markers linking Ashkenazi Jews to Khazar populations (e.g., modern Chuvash or Crimean Tatars, used as proxies). Instead, it broadly cites Iranian and Turkic similarity, which could reflect general Silk Road admixture rather than Khazar descent.
Other genetic studies (e.g., Behar et al., 2013; Cell, 2022) confirm Ashkenazi Jews descend from a small founding population like I mentioned above.
And you still have to contend with the 30-60% of autosomal DNA to Levant populations that could not rise from a mass conversion of a Turkic people.
Yiddish lacks Turkic vocabulary, phonemes, or syntax, which would be expected if it originated among Khazar or Turkic-speaking Jews. Even minor loanwords from Turkic languages are absent, unlike Slavic terms (e.g., bubbe from Polish babcia).
The relexification theory (replacing Slavic vocabulary with German while retaining Slavic grammar) is widely rejected by linguists.
https://nationalpost.com/news/world/ashkenazi-jews-as-well-as-the-yiddish-language-came-from-four-villages-in-northeastern-turkey-study
In an effort to discover the origin of the Yiddish language, researchers say that they have found evidence that proves that Ashkenazi Jews are descended predominately from four villages in northeastern Turkey.
The study, titled “Localizing Ashkenazic Jews to primeval villages in the ancient Iranian lands of Ashkenaz” was conducted by researchers from three universities in the U.K., U.S., and Israel. It was published in the journal Genome Biology and Evolution.
Using a Geographic Population Structure device, Dr Eran Elhaik, a geneticist from the University of Sheffield who led the study, was able to convert the DNA of Ashkenazi Jews into geographic coordinates.
The data showed that 90 percent of Ashkenazi Jews have links to the ancient villages of Iskenaz, Eskenaz, Ashanaz, and Ashkuz that sit near ancient Silk Road trade routes.
From the study:
“North east Turkey is the only place in the world where these place names exist – which strongly implies that Yiddish was established around the first millennium at a time when Jewish traders who were plying the Silk Road moved goods from Asia to Europe wanted to keep their monopoly on trade.
“They did this by inventing Yiddish – a secret language that very few can speak or understand other than Jews. Our findings are in agreement with an alternative theory that suggests Yiddish has Iranian, Turkish, and Slavic origins and explains why Yiddish contains 251 words for the terms ‘buy’ and ‘sell’. This is what we can expect from a language of experienced merchants.”
Yiddish, which incorporates German, Slavic and Hebrew, and is written in Aramaic letters, is commonly thought to be an old German dialect.
However, an alternative theory proposed by Professor Paul Wexler from the University of Tel Aviv and also an author on the study, suggests that Yiddish is a Slavic language that used to have both Slavic grammar and words but in time shed its Slavic lexicon and replaced it with common and unfamiliar German words.
you are giving the same study again and it lacks the genetic markers to make the claim - only genetic similarity.
Again, how would 30-60% of DNA of Ashkenaz have ties to Levant population if they were mass converted Turks?