Negative feedback is exerted by cortisol in the hypothalamic-pituitary axis.

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#Unit 5. Developmental Biology

Differential gene expression is the process by which cells become different from one another based on the unique combination of genes that are active, or “expressed.”

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#Unit 5. Developmental Biology

Genomic equivalence

The presence of identical genes in cells that are radically different from each other.

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#Unit 5. Developmental Biology

Induction

Kind of interaction in which one group of cells changing the behavior of an adjacent set of cells, thereby causing them to change their shape, mitotic rate, or cell fate. 

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#Id: 115

#Unit 5. Developmental Biology

There are two components of inductive interaction:

 Inducer

 Responder

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#Id: 116

#Unit 5. Developmental Biology

Inducer 

the tissue that produces a signal (or signals) that changes the cellular behavior of the other tissue.

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#Id: 117

#Unit 5. Developmental Biology

Responder, 

the cell or tissue being induced.