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Question

The person with Turner's syndrome has

A
45 autosomes and X sex chromosome
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B
44 autosomes and XYY sex chromosomes
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C
45 autosomes and XYY sex chromosomes
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D
44 autosomes and X sex chromosome
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Solution

The correct option is B 44 autosomes and X sex chromosome
In persons with Turner's syndrome, there is a single X chromosome (44 +XO). Individuals are female with limited secondary sex characters, rudimentary ovaries, short statures, webbed skin over the neck, etc.
Turner's Syndrome is monosomy caused by absence of one copy of
X-chromosome from females and is donated by 44 +XO or 45X. It is the result of the fusion of aneuploid gamete (22+0) and sperm (22+X). These females carry the only single copy of genes present on X-chromosomes and hence are sterile females with undeveloped breast, rudimentary ovaries, short statures, webbed skin over the neck, etc. Thus, the correct answer is option D.

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