How could a cytoplasmic determinant, such as a regulatory transcription factor,

Question

How could a cytoplasmic determinant, such as a regulatory transcription factor, allow two embryonic cells to adopt different fates in development? See Section 21.1 All cells will transcribe the same set of genes. Only cells that receive a particular signal from other cells will activate genes and adopt a particular cell fate. Cell division will produce a set of cells that all contain the same levels of the localized determinant. Only the cell that contains a large amount of the cytoplasmic determinant will activate genes that are specific to a particular cell type, cells that contain low levels or none will activate different genes and adopt different fates.

Explanation / Answer

D option is correct because the filling of the cytoplasmic determinant is a deciding factor for cell fate.

The cells filled with cytoplasmic determinant that can be DNA, RNA or Protein and activate different transcription factor and it lead to activation of different gene for different fates of the cells. Regions of the organism differentiate very quickly if each cell contains specific cytoplasmic determinants.

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