Cells transplanted from the neural tube of a frog embryo to the ventral part of another embryo develop into nervous system tissues. This result indicates that the transplanted cells were
A) totipotent.
B) determined.
C) differentiated.
D) mesenchymal.
E) apoptotic.

Question

Quizplus · Accepted Answer

The fact that the transplanted cells developed into nervous system tissues suggests that they were already determined, or committed to becoming nervous tissue. This determination likely occurred during their development in the original neural tube.

Answer: C 
 The fact that the transplanted cells developed into nervous system tissues suggests that they were already differentiated, or had already begun to take on the specialized characteristics of nervous tissue. This differentiation likely also occurred during their development in the original neural tube.

Therefore, the correct answer could be either B or C, depending on which explanation is preferred.

Cells Transplanted from the Neural Tube of a Frog Embryo