Which microscope uses a series of lenses to magnify an open object in steps?

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

If jane has the blood type ab and marries john who has type o blood what are the possible phenotypes of their first kid?

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.