Cell signaling: induction vs constitutive signaling

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HELP!((BIOLOGY)) Cell signaling...induction and constitutive signaling?

Homework Statement



A cell secretes a substance that instructs a neighboring cell to adopt cell fate X. What term describes this process?
A. asymmetric division
B. Apoptosis
C. Induction
D. Retraction
E. Constitutive Signaling


Homework Equations


definitions..

The Attempt at a Solution


I chose E, but I am not sure because my friend said it's a C.
Anyone know the correct answer?
Thank yoU!
 

Discussion

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It's not A because that describes a cell division step where both daughter cells differ from one another (e.g. during oogenesis, spermatogenesis, or budding of certain yeast species).
B is controlled cell death.
C is the correct answer as this describes the cue needed for a certain cell fate to be, well, induced (if the other cell is permissive).
D is the 'pulling back' of lamelli/filo/...podia, i.e. taking back protrusions of the cell membrane.
E describes a process whereby a constant signal is transmitted, e.g. when a receptor molecule is mutated so that it does not depend on its ligand for activation but adopts the correct conformation for signalling anyway. Certain modifications such as phosophorylation etc. can achieve this as well.