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{:(1., "Karyotyping", (a), "Metaphase"),...

`{:(1., "Karyotyping", (a), "Metaphase"), (2., "XO females", (b), "Barr body"), (3., "3n female", (c), "Aneuploidy"), (4., "Lyon", (d), "Bridges"):}`

A

1-a 2-c 3-d 4-b

B

1-c 2-b 3-d 4-a

C

1-b 2-d 3-a 4-c

D

1-c 2-a 3-d 4-b

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The correct Answer is:
A
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