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Question

Which is most common chromosomal aberration seen in cancer-

A
Deletion
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B
Invention
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C
Duplication
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D
Translocation
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Solution

The correct option is A Deletion
A deletion mutation occurs when part of a DNA molecule is not copied during DNA replication. This uncopied part can be as small as single nucleotide or as much as an entire chromosome. The loss of this DNA during replication can lead to genetic disease.
So, the correct option is 'Deletion'.

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