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What are the main diseases caused by errors in the number of sex chromosomes in the...

What are the main diseases caused by errors in the number of sex chromosomes in the cells of an individual?

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Ans: The main diseases caused by errors in the number of sex chromosomes in the cells of an individual are:

Klinefelter's Syndrome- this genetic disorder is caused by the presence of an additional copy of X-chromosome resulting into a karyotype of 47 (XXY).

Turner's Syndrome- this disorder is caused due to the absence of one X-chromosome, that is 45 (X0)

Triple X Syndrome (Superfemale) that is 47(XXX) cells; its happening due to errors in maternal meiosis I

XYY Syndrome (Supermale)- it may caused by paternal non-disjunction at meiosis II

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