A cell picks up mutations that allow it to move past the G1 and G2 checkpoints even if its growth factor is not present, These mutations also cause the mutated cell to bond less tightly to other cells and the extracellular matrix. As a result, this cell would ... die form a benign tumor form a malignant tumor that metasticizes form a mass of normal tissue

The location of the water table is subject to change. select the best answer from the choices provided ot of

What links the two strands in a dna helix together in the middle? a. phosphate groups b. sugar rings bonded together c. proteins d. bases with hydrogen bonds

Read the following scenario to answer the following question. in some zoos, rare crosses between a male lion and a female tiger have produced hybrid offspring called "ligers." male ligers are sterile but some female ligers are fertile. in the wild, lion and tiger ranges do not naturally overlap, making such a cross unlikely. furthermore, the solitary behavior of tigers and the social organizations of lions create behavioral differences. applying the biological species concept, the sterility of ligers reveals that a. lions are probably a subspecies of tigers b. tigers and lions are the same species c. a new species called "ligers" is forming d. tigers and lions are separate species