Modern cloning techniques have demonstrated that the vast majority of differentiated cells are genetically equivalent to developing cells in the embryo.What is an exception to this finding?
A)Nerve cells are often limited in their mitotic activity.
B)In the immune system,sequences of DNA may rearrange to permit response to new pathogens.
C)In the brain,DNA sequences may change with learned behavior.
D)The lining of the digestive system is frequently replaced.Some of these cells may show repeats of certain DNA sequences.

Question

Quizplus · Accepted Answer

In the immune system, sequences of DNA may rearrange to permit response to new pathogens, which means that the differentiated immune cells are genetically different from the developing cells in the embryo.

Modern Cloning Techniques Have Demonstrated That the Vast Majority of Differentiated