Sentences with phrase «of a fertilized egg normally»

The implantation of a fertilized egg normally takes place 6 to 12 days after ovulation — that's about two to three weeks before the next period is missed.

Not exact matches

They made these clones by a process called automatic parthenogenesis: The egg is formed normally (with half the species» usual number of chromosomes), then fertilized by the «polar body,» a cell that is created during oogenesis and contains the same gene copies as the egg, resulting in the shark having half the genetic variation of its mother.

Twins are normally either identical — the result of a single sperm fertilizing a single egg, which then splits and duplicates itself — or fraternal, developing from two separate eggs fertilized by two separate sperm.