A chimera, a mixture of goat and sheep

A chimera, a mixture of goat and sheep

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Credit: GEOFF TOMPKINSON/SCIENCE PHOTO LIBRARY

Caption: Sheep/goat chimera. Chimera or chimaera, a creature that contains a mixture of genetically- different tissues, in this case those of a sheep and a goat. A chimera is created by mixing togeth- er the cells from separate embryos, and then impl- anting them into a surrogate mother. The composite nature of this chimera can be seen as areas of thin white goat fur, and thick grey sheep wool. A chimera has a composite nature because the embryo cells were only physically mixed together; no genetic material was transferred between them. Its sex cells also developed from either one embryo or the other, meaning that its offspring will be "pure breeds", not another chimera.

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Keywords: animal, bioengineering, biotech., biotechnology, chimaera, chimera, engineered, engineering, genetic, genetically, genetics, goat, goat/sheep, research, sheep, sheep/goat, transgenic

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