Assertion: semen's sperm | /r/CapableOf | allow selection
Facets:
value: according to sex
type: OTHER
Source sentences:
text: After about half-an-hour, the lighter sperm, containing the male chromosome pair (XY), will have swum to the top, leaving the heavier sperm, containing the female chromosome pair (XX), at the bottom, thus allowing selection and storage according to sex.