試題詳解

11. 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) able to give rise to all tissue types, suggesting pluripotency.
(B) already committed to forming neural tissues, implying early determination.
(C) specialized cells that can only differentiate into a single type of tissue, indicating differentiation.
(D) undifferentiated cells capable of forming a variety of cell types under specific conditions, pointing to plasticity.