Final answer:
A person with a 46, XX karyotype is a chromosomally normal female. This chromosome pattern is typical for females and, assuming no other genetic issues, would not be associated with the health complexities or sterility seen in chromosomal abnormalities such as Turner or Klinefelter syndromes.
Step-by-step explanation:
A person who is 46, XX would be considered a chromosomally normal female. In human genetics, a female typically has two X chromosomes (XX), which is the standard chromosome complement for females. The presence of two X chromosomes indicate normal sex chromosome number for a female.
When an abnormal number of X chromosomes is present, for example in the case of Triple X syndrome (XXX) or Klinefelter syndrome (XXY), various health and development issues may arise. However, with a standard 46, XX karyotype, a person would be expected to develop female sexual characteristics and, barring any other unrelated genetic or environmental factors, to be fertile and physically typical for a female.
Chromosomal abnormalities, such as those observed in Turner syndrome (XO) or more complex forms of Klinefelter syndrome, can lead to physical and mental defects, as well as sterility. However, these conditions are not applicable to someone with a 46, XX constitution, hence the individual is considered chromosomally normal.