Why was mixed marriages not allowed in Germany​

Nazi-termed mixed marriages were often not interfaith marriages, because in many cases the classification of one spouse as non-Aryan was only due to her or his grandparents being enrolled with a Jewish congregation or else classified as non-Aryan.

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Explanation:

unless they converted, many non-christians (mainly jews and muslims) were persecuted

well since twins have about the same dna they dont have one think in common which is the figer print. nobodys fingerprint is the same. if your using twin you would most likely get around the same results for both of them because of the genetics.. i hope this