Question

1. making a diagnosis: what diagnosis would you give patient a? normal # of chromosomes klinefelters syndrome downs syndrome trisomy 13 syndrome

Explanation:

Klinefelter's Syndrome is characterized by the presence of an extra X - chromosome in males (XXY). Down's Syndrome is due to an extra copy of chromosome 21, and Trisomy 13 Syndrome is due to an extra copy of chromosome 13. A normal karyotype has a specific number and structure of chromosomes. Since the karyotype shows XXY, it indicates Klinefelter's Syndrome.

Answer:

B. Klinefelter's Syndrome