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In Drosophila melanogaster, there are four pairs of chromosomes.

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In Drosophila melanogaster, there are four pairs of chromosomes. If there occurs chromosomal aberrations resulting in trisomic and monosomic condition, what will be the chromosomal count? Write the correct chromosomal count against respective chromosomal aberration.

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Normal chromosome of Drosophila

melanogaster (2n) = 8

Frisomic condition (2n+1) = 9

Monosomic condition (2n – 1) = 7

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