Double trisomes have genomic constituions of2n – 2 2n + 1 + 1 2n + 1 2n + 2

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Correct Answer is 2. 2n + 1 + 1
In a diploid organism when two different chromosomes are represented as triplicate, such representations is termed as trisomy.(2n + 1 + 1).
Double trisomy caused great genetic imbalance.