Assertion: sperm's sex chromosome | /r/HasProperty | x
Facets:
Source sentences:
text: The most common chromosomally caused syndromes are Down syndrome (having an extra chromosome number 21), Turner’s syndrome (having only one sex chromosome, an X), and Klinefelter’s syndrome (having more than two sex chromosomes).
text: Females carry identical sex chromosomes (XX), while males have two different chromosomes (XY).
text: Sex chromosomes present can be either XX or XY (46, XX/XY).