Human Heredity 11th Edition by Michael Cummings

تمرين 29

Nuclear transfer to clone cattle is done by which of the following techniques?
A) An 8-cell embryo is divided into two 4-cell embryos and implanted into a surrogate mother.
B) A 16-cell embryo is divided into 16 separate cells, and those cells are allowed to form new 16-cell embryos that are implanted directly into surrogate mothers.
C) A 2-cell embryo is divided into two separate cells and implanted into a surrogate mother.
D) A 16-cell embryo is divided into 16 separate cells and fused with enucleated eggs. The fused eggs are then implanted into surrogate mothers.
E) None of these.