41.6 MB (3.7 MB compressed)
4391 x 3312 pixels
37.1 x 27.9 cm ⏐ 14.6 x 11.0 in (300dpi)
JAMES KING-HOLMES / SCIENCE PHOTO LIBRARY JAMES KING-HOLMES / SCIENCE PHOTO LIBRARY
World's first sheep clones. The faces of identical "Megan" and "Morag", the world's first cloned sheep aged 9 months. These Welsh Mountain sheep were the product of research by Dr. Ian Wilmut and colleagues at the Roslin Institute in Edinburgh, Scotland. The research involved culturing identical embryonic cells from sheep to produce a "cell line". Next, a sheep egg cell had its DNA removed, and one of these embryonic cells was implanted into the egg. A spark of electricity then stimulated the egg to grow into a lamb, nourished in the womb of a surrogate sheep. This achievement, in 1996, of cloned farm animals, may provide benefits to agriculture and biotechnology.
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