Answer:
Biological males have one copy of the X chromosome, and biological females have two copies of the X chromosome.
Step-by-step explanation:
Biological males have one copy of the X chromosome because they inherit one X chromosome from their mother and one Y chromosome from their father. In contrast, biological females inherit one X chromosome from each parent, as both parents contribute an X chromosome. Therefore, females have two copies of the X chromosome. X-linked traits are traits that are located on the X chromosome, and their inheritance patterns depend on the number of copies of the X chromosome present in each individual.