The "cri-du-chat" syndrome in caused by change in chromosome structure involving:

Deletion

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Duplication

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Inversion

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Translocation

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Solution

The correct option is A Deletion
Loss of one or more nucleotide bases to the DNA segment by removal of an intercalary DNA segment is known as deletion.

Cri-du-chat syndrome characterized by a mewing like cry of a newborn which is caused by loss or deletion of chromosome 5.

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