A proper Retinoic Acid (RA) and FGF gradients are important for proper axial development. RA and FGF are involved in two aspects of axial formation and patterning, the wave determination front and Hox gene regulation. What would you expect to see if RA was slightly elevated along the AP axis

Explain how ancient whale fossils found in eqypt are believed to support the theory of evolution.

Moving down the ramp from 6 meters to

What is the significance of the protein-lined pits? a. protein attracts other proteins needed for atp synthesis within the cell. b. protein-lined pits are able to transport one molecule at a time down the concentration gradient within the cell. c. the polarity of proteins allows other polar molecules to attach and be transported in the cell by transport channels. d. receptors within the pits allow ligands to fuse and be transported into the cell by endocytosis.