TLS Online TPP Program

#Question id: 28215


In the frog (Xenopus laevis) a gradient of the paracrine factor activin, which of the following observation is correct at the lower concentrations of activin ?

#Unit 5. Developmental Biology
  1. shows default gene expression instructed the cells to become blood vessels and heart
  2. activate the Xbra gene and instructed the cell to become muscle
  3. shows default gene expression instructed the cells to become muscle cells
  4. activate goosecoid gene and instructed the cell to become the frog’s dorsal-most structures