Assertion: sperm | /r/CapableOf | carry y
Facets:
Source sentences:
text: In humans, an ovum can carry only an X chromosome (of the X and Y chromosomes), whereas a sperm may carry either an X or a Y; males have the control of the sex of any resulting zygote[citation needed], as the genotype of the sex-determining chromosomes of a male is XY, and a female's is XX.