試題詳解

8. The sheep Dolly was cloned by which of the following processes?
(A) isolation of stem cells from a lamb embryo and production of a zygote equivalent
(B) transfer of an adult cell's nucleus into an enucleated sheep egg, followed by incubation in a surrogate
(C) separation of an early-stage sheep blastula into separate cells, one of which was incubated in a surrogate sheep
(D) replication and dedifferentiation of adult stem cells from sheep bone marrow
(E) the nucleus of an embryonic cell was used to replace the nucleus of an adult cell, which was incubated in a surrogate sheep