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Question
Mental retardation in man associated with sex chromosomal abnormality is usually due to ______.
Options
increase in size of X-chromosome
increase in size of Y-chromosome
increase in number of Y-chromosome
increase in number of X-chromosome
MCQ
Fill in the Blanks
Solution
Mental retardation in man associated with sex chromosomal abnormality is usually due to increase in number of X-chromosome.
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