Help please asap Directional selection differs from stabilizing selection in that:

a. Directional selection favors one extreme phenotype, whereas stabilizing selection favors intermediate over extreme phenotypes

b. Directional selection requires new mutations whereas stabilizing selection uses existing variation

c. Directional selection operates only in small populations, whereas stabilizing selection only works in large populations

d. they both do nothing, these are terms I made up while writing this retake

a. Directional selection favors one end of the phenotype distribution, whereas

stabilizing selection favors intermediate over extreme phenotypes

Explanation:

Directional selection is called directional because it favors one phenotype over another, and stabilizing selection finds a balance between phenotypes.

[content deleted] - user123802726recklesschicken

imagine a line passing through the center of earth that goes through both the north pole and the south pole. this imaginary line is called an axis. earth spins around its axis, just as a top spins around its spindle. this spinning movement is called earth's rotation. at the same time that the earth spins on its axis, it also orbits, or revolves around the sun. this movement is called revolution.