Identify the event that indicates that evolution has occurred. a. a white-eyed fly is born into a population of brown-eyed flies. b. an allele frequency changes in a population. c. a flock of birds dies. d. a new predator comes into an environment.

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.