PYQ NEET- Principles Of Inheritance And Variation 6 L-7

Question: If a female individual has a small round head, furrowed tongue, partially open mouth, broad palm with a characteristic palm crease, and her physical, psychomotor, and mental development is retarded, what will the karyotype analysis of such an individual show? (NEET-2022)

A) 47 chromosomes with XXY sex chromosomes

B) 45 chromosomes with XO sex chromosomes

C) 47 chromosomes with XYY sex chromosomes

D) Trisomy of chromosome 21

Answer: Trisomy of chromosome 21

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