The constellation of symptoms including infertility, small testes (testicular atrophy), gynecomastia, and tall stature in a male is characteristic of Klinefelter syndrome. This condition is caused by the presence of an extra X chromosome, resulting in a karyotype of 47, XXY. Option B (45, X) represents Turner syndrome, which affects females. Option C (46, XY, del(5p)) represents Cri-du-chat syndrome. Option D (47, XY, +21) represents Down syndrome in a male.
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