What is an example of parasitism in the marine biome?

What are the two main phases of a cell cycle

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.

28. how many linkage groups will be formed by homogametic organism with 28 chromosomes?