Trisomy (2n + 1) causes retardation in child, which is known as

Philadelphina

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Down's Syndrome

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Albinism

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None of these

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Solution

The correct option is A Philadelphina
Philadelphia chromosome is the abnormality caused due to a reciprocal translocation between chromosome 9 and 22 in the leukemia cancer cells.
Leukemia is cancer of blood-forming tissue, hindering the body's ability to fight infection. Philadelphia chromosome is a specific genetic abnormality in chromosome 22 in leukemia cancer cells.
Thus, the correct answer is 'Philadelphia.'

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