Question

Which biotechnological technique, involving the transfer of a nucleus from a somatic (body) cell of a donor animal into an enucleated oocyte, was used to produce the world's first cloned mammal from an adult somatic cell, and is now being explored for the conservation and multiplication of elite or endangered livestock breeds?

A In vitro fertilisation (IVF)
B Multiple Ovulation Embryo Transfer (MOET)
C Artificial insemination
D Somatic Cell Nuclear Transfer (SCNT)
E Marker-assisted selection
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