Earth's atmosphere, oceans, and continents, began to form during the first several hundred million years of
a. precambrian time
b. paleozoic era
c. mesozoic era
d. cenozoic era

Ras is a g-protein that is activated when a growth factor attaches to egfr. its activation results in the replacement of a gdp molecule with a gtp molecule, thus allowing a signal transduction pathway to be activated. considering the signal pathway illustrated on this page, what is one potential outcome of a mutation in the ras gene that leads to ras protein hyperactivity. be specific.