Microevolution<span> happens on a small scale (within a single population), while </span>macroevolution<span> happens on a scale that transcends the boundaries of a single species. Despite their </span>differences<span>, evolution at both of these levels relies on the same, established mechanisms of evolutionary change: mutation.</span>
GG bb
gg GGgg bbgg
Bb GGBb bbBb
does this make sense ? I tried to set up the square best I can