Assertion: zygote's nucleus | /r/HasProperty | formed
Facets:
value: from compacted sperm
type: CAUSE
value: by replacing protamines
type: MANNER
Source sentences:
text: However, paternal nuclei are formed from compacted sperm by replacing protamines with histones25,26.
text: After several thousand nuclei have been formed, they migrate to the margins of the egg.