Green beetles survive because birds don't see them, whereas brown beetles get detected. this is an example of which mechanism of microevolution?
a. gene flow
b. genetic drift
c. natural selection

Multicellular organisms use cell division, mitosis, for growth and the maintenance and repair of cells and tissues. single-celled organisms may use cell division as their method of reproduction. regardless of the reason for mitosis, the process ensures genetic continuity. what is the step in the cell cycle that ensure genetic continuity?

What condition is kept close to its set point in osmoregulation? a. body temperature b. platelet count c. blood glucose level d. water balance

Which of the following cell structures is significantly different between gram- positive and gram-negative bacteria?