What is the chromosome composition of Triplo-X females?

Triplo-X females, also referred to as 47,XXX females, have an additional X chromosome beyond the typical female karyotype. In humans, females usually have two X chromosomes, designated as XX, which gives them a diploid chromosome number of 2n=46. However, in the case of Triplo-X females, they have three X chromosomes (XXX), leading to a total chromosome composition of 2n=47. This extra X chromosome can be associated with certain developmental and health characteristics, but many Triplo-X individuals lead relatively normal lives without significant symptoms.

This understanding corroborates the correct answer regarding the chromosome composition of Triplo-X females.