Q23 - Specification vs Determination in Heterotopic Grafts
The early embryonic cells pass through two stages of differentiation: specification and determination.
Figure 1.
Using the information and data, determine which of the statements are true or which are false.
A. These data supports that the fate of the determined cell is not reversible.
B. The cell that is specified loses its other differentiation potentials
C. If the graft is removed at the late stage and cultured in isolation, it will give rise to the red spinous sphere (shown in the picture)
D. If the graft is removed at the late stage and cultured in the presence of the eye inducing factors, the eye-like structure will be developed.
Question reproduced from IBO 2018, Theoretical Paper 1, licensed under CC BY-NC-SA 4.0 - attributed to the International Biology Olympiad. Open the full exam PDF · Community solutions (unofficial)