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Illegal Beings: Human Clones
Sperm Unnecessary
libfemme ( 04/23/2004, 01:08:33 )Japanese and Korean scientists have created a fatherless mouse without using sperm. Many animals reproduce by parthenogenesis (an unfertilized egg), however the process developed by these scientists involved using two eggs and fusing them together. This can't be considered cloning because there are two parents involved. So in that sense this is a form of sexual reproduction. (This might have relevance some day for men who do not produce sperm. If a somatic cell, a cell from another part of their body, could be induced to become an egg they could artifically fertilze another egg, and result in a sexually produced offspring.)The scientists knocked out a gene for imprinting in the donor egg first, and they think this is what allowed the embryo to develop into a live mouse. The knowledge about imprinting does have direct relevance for cloning however.
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