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Genetic chimerism, also known as a chimera, is a single organism made up of cells with several genotypes. In species, this refers to an organism originating from two or more zygotes. It might include blood cells of various blood types, minor differences in structure (phenotype), and even the possession of both female and male sex organs if the zygotes were of different sexes.
Ethical Discussion
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Many scientists have expressed reservations about the procedure, claiming that although the embryos, in this case, were killed after 20 days, others might attempt to continue the research.
They re asking for a general discussion on the consequences of making chimeras that are part human and part nonhuman.