The chromosomal karyotype in patau syndrome is

A. 47XX,+21

B. 46XX/47XX,+18

C. 45XX,der(14;21)

D. 47XX,+13

Correct Answer: 47XX,+13

Description: TRISOMY 13: PATAU SYNDROME Incidence: 1 in 15,000 bihs Karyotypes: Trisomy 13 type: 47,XX, +13 Translocation type: 46,XX,+13,der(13;14)(q10;q10) Mosaic type: 46,XX/47,XX, +13 (Robbins Basic Pathology, 9 th edition. page : 238)

Category: Pathology

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