| 31. | Scientists from Johns Hopkins also grew stem cells from egg cells taken from aborted fetuses.
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| 32. | By contrast, a woman's egg cells divide just 24 times, almost all during fetal life.
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| 33. | The female gonad, the ovary, produces egg cells.
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| 34. | Then Wilmut removed the nucleus, containing the genes, from an egg cell taken from another ewe.
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| 35. | If the egg cell was formed without meiosis, it is a full clone of its mother.
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| 36. | Sometimes there are mistakes with the copying of DNA that makes the sperm or egg cell.
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| 37. | This egg cell is never fertilized by sperm and will never be implanted in a womb.
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| 38. | Because spermatia cannot swim, they depend on their environment to carry them to the egg cell.
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| 39. | ZZ and WW offspring occur either by terminal fusion or by endomitosis in the egg cell.
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| 40. | Under the technology, scientists remove the nucleus from an egg cell, leaving proteins and other nutrients.
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