Bio 200 RQ 8-2
Based on the data in figure 21.2, is programmed cell death (apoptosis) required for
normal mouse brain development? - answer Yes
How do various cells in an embryo become "committed" to a particular cell fate? -
answer gradually, regulated by cell signaling and cascades of transcription factors
Which is the characteristic of a determined cell? - answerit is locked into one potential
cell fate
Cell determination is more "rigid" in which group of organisms? - answer animals
What does the experiment in figure 21.13 show about cell fate determination
(commitment)? - answerthe expression of a single gene can alter cell fate
How does the "MyoD" protein work? - answerit is a transcription factor that binds the
enhancers of several muscle-specific genes
What is the concept of "de-differentiation"? - answerit is the idea of reversing
differentiation of cells, to change differentiated cells so that they have more cell fate
potential
Based on the data in figure 21.2, is programmed cell death (apoptosis) required for
normal mouse brain development? - answer Yes
How do various cells in an embryo become "committed" to a particular cell fate? -
answer gradually, regulated by cell signaling and cascades of transcription factors
Which is the characteristic of a determined cell? - answerit is locked into one potential
cell fate
Cell determination is more "rigid" in which group of organisms? - answer animals
What does the experiment in figure 21.13 show about cell fate determination
(commitment)? - answerthe expression of a single gene can alter cell fate
How does the "MyoD" protein work? - answerit is a transcription factor that binds the
enhancers of several muscle-specific genes
What is the concept of "de-differentiation"? - answerit is the idea of reversing
differentiation of cells, to change differentiated cells so that they have more cell fate
potential
