Scientists Attempted for Many Years to Conduct Nuclear Transplants but Failed.However

Multiple Choice

Scientists attempted for many years to conduct nuclear transplants but failed.However, geneticists had success in cloning a sheep.They were successful because they

A) picked a cell very early in development.
B) replicated the blastomeres before insertion.
C) delayed transcription in the blastomeres.
D) treated the nucleus with sheep plasma before nuclear insertion.