Give two example of chromosomal disorder showing trisomy.

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Solution

In trisomy, the affected person has 47 chromosomes instead of 46. Down syndrome (caused by trisomy of chromosome number 21) and Edward syndrome (caused by trisomy of chromosome number 18) are two examples of chromosomal disorder showing trisomy.

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\begin{matrix} Disorder & Characteristic feature i . & Haemophilia & Sex linked recessive i i . & Down's syndrome & Trisomy 21 i i i . & Turner's syndrome & Trisomy of sex chromosome i v . & Klinefelter's syndrome & Monosomy of sex chromosome \end{matrix}

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