Final answer:
An individual with a 47, XXY chromosome complement, indicative of Klinefelter syndrome, will show normal male development with some atypical male characteristics such as small testes and perhaps enlarged breasts, due to the additional X chromosome.
Step-by-step explanation:
An individual with a 47, XXY chromosome complement will be showing normal male development but with certain anomalous characteristics typically associated with Klinefelter syndrome.
The condition characterized by the presence of an additional X chromosome in males leads to a range of symptoms that can include small testes, infertility, reduced body hair, and sometimes enlarged breasts. These individuals are genetically male due to the presence of a Y chromosome, which determines male sex. However, the additional X chromosome can lead to a decrease in the typical male secondary sexual characteristics and can cause other physical, developmental, and social challenges. It is important to note that while individuals with Klinefelter syndrome are male, they may exhibit some features that are atypical for males.
The additional X chromosome undergoes the process of inactivation to ensure that there is no excess genetic dosage in the body's cells. In individuals with Klinefelter syndrome, we can observe this as the formation of several Barr bodies within each cell nucleus.