Boys have XY chromosome and girls have XX. So which chromosome does a sexless person have?

1. In humans the normal female has two X chromosomes, while the normal male has only one X chromosome.
2. Thus, human females have the same number of expressed X-linked genes as do human males (XY), both genders having essentially one X chromosome per cell, from which to transcribe and express genes.
3. So X chromosome is responsible for chromosome dosage compensation. Sex dosage mainly depends on the X linked gene.