What drives the increase in body size in Drosophila when oxygen concentrations are elevated?

Question

Quizplus · Accepted Answer

Directional selection drives the increase in body size in Drosophila when oxygen concentrations are elevated. This is because higher oxygen concentrations allow for increased metabolism and energy production, which can support the growth of larger bodies. Natural selection then favors individuals with larger body sizes, which leads to a directional shift in the population towards larger sizes.

What Drives the Increase in Body Size in Drosophila When