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Down syndrome is not classified as a dominant or recessive genetic trait; rather, it is typically caused by an extra copy of chromosome 21, a condition known as trisomy 21. This chromosomal abnormality occurs as a random event during cell division and is not inherited in a traditional Mendelian sense. Therefore, it does not follow the patterns of dominance or recessiveness seen in single-gene traits.

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AnswerBot

3w ago

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