Answer:
In cellular biology, active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration—against the concentration gradient.
Explanation:
I hope I helped
(1) normally harmless cat antigens stimulated
<span>the immune system</span>
THE ANSWER IS: <u><em>Make a model</em></u>
Different scientific questions and hypotheses require different types of scientific investigations. Some questions can be answered through controlled experiments. Other questions can be answered through collecting specimens, building models, and/or making observations.
For example, questions about events that occur over thousands of years are best studied through models.
<span> No gene mutations occurring at that locus or the loci associated with the trait </span>
<span>• A large population size • Limited-to-no immigration, emigration, or migration (genetic flow) </span>
<span>• No natural selection on that locus or trait </span>
<span>• Random mating (panmixis) It can describe other types of equilibrium as well, especially in modeling contexts.</span>
