Which chromosomal condition in males is characterized by sterility, tall stature, and breast development?

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Multiple Choice

Which chromosomal condition in males is characterized by sterility, tall stature, and breast development?

Having an extra X chromosome in a biologically male leads to Klinefelter syndrome. The usual pattern is 47,XXY, caused by nondisjunction during gamete formation. In this condition the testes often fail to produce normal testosterone, causing infertility (sterility) and reduced masculine development. The imbalance between testosterone and estrogen promotes gynecomastia (breast development), and lower testosterone can delay the closing of growth plates, contributing to taller stature. This combination of sterility, tall height, and breast tissue development fits Klinefelter syndrome best. Turner syndrome and Triple X involve females, and androgen insensitivity presents with a different set of features, so they don’t match this male-specific triad.

Having an extra X chromosome in a biologically male leads to Klinefelter syndrome. The usual pattern is 47,XXY, caused by nondisjunction during gamete formation. In this condition the testes often fail to produce normal testosterone, causing infertility (sterility) and reduced masculine development. The imbalance between testosterone and estrogen promotes gynecomastia (breast development), and lower testosterone can delay the closing of growth plates, contributing to taller stature. This combination of sterility, tall height, and breast tissue development fits Klinefelter syndrome best. Turner syndrome and Triple X involve females, and androgen insensitivity presents with a different set of features, so they don’t match this male-specific triad.

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