Question

alexander has a sex chromosome abnormality. he is very tall, has small testicles, and has never been able to conceive a child with his wife. his personality is rather unractive. alexander most likely has which of the following?
a. klinefelters syndrome
b. turners syndrome
c. xyy complement
d. xxx syndrome

Explanation:

Klinefelter's syndrome is a sex - chromosome disorder in males (XXY). Symptoms include tall stature, small testicles, infertility, and sometimes a more passive personality. Turner's syndrome (XO) affects females. XYY complement (XYY) may have different characteristics (e.g., taller, but not the same as described here). XXX syndrome affects females.

Answer:

A. Klinefelter's syndrome